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displaying posts 1 to 25 of 40
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| Author | Subject: V-power... hesitation? |
 thewho07
Regular  Location: Scotland Registered: 11 Aug 2009 Posts: 289 Status: Offline |
Post #1
Filled the car with V-power the other day, £75 worth!  Anyway, everytime I start the car and pull away it hesitates for a couple of seconds, after that its fine. Only noticed it since I filled with V-power though. Seems worse when it's a cold start. Any ideas? |
 Posted 3rd Mar 2012 at 17:57
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bigbadbowen
Seasoned Pro  Location: Winchester Registered: 21 Nov 2003 Posts: 13,753 Status: Offline |
Post #2
Seems at bit odd ? Try normal fuel see if it's the same ? |
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Posted 3rd Mar 2012 at 18:07
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #3
I always run V-Power without exception, never had a problem...As Chris says, try running on normal fuel again and see what happens.  ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
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Posted 3rd Mar 2012 at 18:09
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,871 Status: Offline |
Post #4
unlikely to be the fuel, but have you tried an ecu re-set?________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Mar 2012 at 18:41
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darzmat
Senior User  Location: nairn Registered: 14 Jan 2011 Posts: 879 Status: Offline |
Post #5
the guy mpaul that had my car before me put in v-power and he had the same problem. from then on he just filled up with normal fuel.ive not tried v power but i do use the super unleaded from sainsburys (although i dont notice a difference) ________________________________________ 1997 blaze GTI-6 bought january '11 £800 Spend to date on parts £827.88 |
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Posted 3rd Mar 2012 at 18:44
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #6
I use V-Power in both my car and bike....and always have done. It seems to have a different smell when you put the fuel in than normal unleaded and even other brands of super.I mainly use it for the cleaning detergents to be honest. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 3rd Mar 2012 at 18:55
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allesclar
Seasoned Pro  Location: Sheffield Registered: 17 May 2009 Posts: 4,254 Status: Offline |
Post #7
v power ftw. ________________________________________ Team allesclar ® |
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Posted 3rd Mar 2012 at 19:13
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m306
Seasoned Pro  Location: south coast Registered: 16 May 2011 Posts: 1,074 Status: Offline |
Post #8
i run super and ive got cold start hesitation like youve described but i dont think its the fuel. ive been running on it for 4 months and only recently had the problem.personally id say neither of us have our problems caused by the fuel. have you considered other parts that can cause cold start hesitation? ________________________________________ supercharged China gti6 - Thu 16th Sep 1999 - sold2010 megane rs250 |
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Posted 3rd Mar 2012 at 19:41
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thewho07
Regular Location: Scotland Registered: 11 Aug 2009 Posts: 289 Status: Offline |
Post #9
m306 wrote: i run super and ive got cold start hesitation like youve described but i dont think its the fuel. ive been running on it for 4 months and only recently had the problem. personally id say neither of us have our problems caused by the fuel. have you considered other parts that can cause cold start hesitation? What should i look at first? |
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Posted 3rd Mar 2012 at 19:42
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m306
Seasoned Pro Location: south coast Registered: 16 May 2011 Posts: 1,074 Status: Offline |
Post #10
stan_306gti6 wrote: The hesitation could be down to a lambda fault, or due to the fact it appears just after startup it could be the CTS has gone bad and is not supplying the engine with fuel enrichment. thats one possible explanation stan gave for mine, its something i know nothing about but theres alot of guys here who should be able to help ________________________________________ supercharged China gti6 - Thu 16th Sep 1999 - sold2010 megane rs250 |
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Posted 3rd Mar 2012 at 19:52
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atterz
Seasoned Pro  Location: Stafford Registered: 18 Feb 2011 Posts: 1,134 Status: Offline |
Post #11
I know what you mean about vpower smelling different stan, weird but it does seem different to normal fuel.________________________________________ owain wrote: A GTI-6 with a good dashboard and the seats down can outsprint an E46 M3 in July. |
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Posted 3rd Mar 2012 at 21:11
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #12
atterz wrote: I know what you mean about vpower smelling different stan, weird but it does seem different to normal fuel. Yep, it certainly smells different, quite a nice smell too I think.  At least with a different smell you definitely know you're putting V-Power in. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 3rd Mar 2012 at 23:05
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mattgti6phase2
Seasoned Pro  Location: inside my 6 abusing the tarmac!! Registered: 16 Jul 2010 Posts: 2,371 Status: Offline |
Post #13
Its a waste of time using the higher octane fuels. It makes no difference at all. Also the 97 is no cleaner than 95 so there are no benefits there. The hesitation you may be experiencing will be due to the fact that 97 Resists ignition more than 95 fuel. Basically the higher the octane rating the more you engine will struggle to ignite the fuel. ________________________________________ Team Nile 6 Team: 40.2 MPG 5 x a 306 owner! currently abusing type r's in a town near you ™  I truely live for the 306 ® Build date: 29th October 1997 Wednesday's car midweek madness  |
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Posted 4th Mar 2012 at 11:22
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owain
Seasoned Pro  Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #14
I was once going to use V-Power but I too hesitated. I then just used normal Tesco 95 RON and saved a load of money.Maybe it was your engine going "Really?" Unless you're running boost, in which case fair play. ________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 4th Mar 2012 at 12:09
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allesclar
Seasoned Pro Location: Sheffield Registered: 17 May 2009 Posts: 4,254 Status: Offline |
Post #15
mattgti6phase2 wrote: Its a waste of time using the higher octane fuels. It makes no difference at all. Also the 97 is no cleaner than 95 so there are no benefits there. The hesitation you may be experiencing will be due to the fact that 97 Resists ignition more than 95 fuel. Basically the higher the octane rating the more you engine will struggle to ignite the fuel. So for a super-charged 306 i should be using the 95 octane fuels as the premium stuff makes no difference? If you say so  ________________________________________ Team allesclar ® |
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Posted 4th Mar 2012 at 12:10
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #16
allesclar wrote: So for a super-charged 306 i should be using the 95 octane fuels as the premium stuff makes no difference? BOOM ________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 4th Mar 2012 at 12:13
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mattgti6phase2
Seasoned Pro Location: inside my 6 abusing the tarmac!! Registered: 16 Jul 2010 Posts: 2,371 Status: Offline |
Post #17
allesclar wrote: mattgti6phase2 wrote: Its a waste of time using the higher octane fuels. It makes no difference at all. Also the 97 is no cleaner than 95 so there are no benefits there. The hesitation you may be experiencing will be due to the fact that 97 Resists ignition more than 95 fuel. Basically the higher the octane rating the more you engine will struggle to ignite the fuel. So for a super-charged 306 i should be using the 95 octane fuels as the premium stuff makes no difference? If you say so Sorry sir I didn't realise you were boosted  in that case 97 and above FTW ________________________________________ Team Nile 6Team: 40.2 MPG 5 x a 306 owner! currently abusing type r's in a town near you ™ I truely live for the 306 ® Build date: 29th October 1997 Wednesday's car midweek madness |
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Posted 4th Mar 2012 at 12:16
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allesclar
Seasoned Pro Location: Sheffield Registered: 17 May 2009 Posts: 4,254 Status: Offline |
Post #18
 ________________________________________ Team allesclar ® |
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Posted 4th Mar 2012 at 12:18
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #19
thewho07 wrote: Filled the car with V-power the other day, £75 worth! Anyway, everytime I start the car and pull away it hesitates for a couple of seconds, after that its fine. Only noticed it since I filled with V-power though. Seems worse when it's a cold start. Any ideas? Have you used this tankful yet and tried standard unleaded again? Interested to know if the issue was resolved by changing the fuel back to normal 95... ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 9th Mar 2012 at 09:03
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aaron6
Seasoned Pro  Location: On the sofa in maidstone Registered: 16 May 2006 Posts: 5,840 Status: Offline |
Post #20
allesclar wrote: The map for charged 6's is using high octane but if your car were to be mapped to 95, I'm sure that would be fine. In fact, it would be interesting to see if there is a power drop. mattgti6phase2 wrote: Its a waste of time using the higher octane fuels. It makes no difference at all. Also the 97 is no cleaner than 95 so there are no benefits there. The hesitation you may be experiencing will be due to the fact that 97 Resists ignition more than 95 fuel. Basically the higher the octane rating the more you engine will struggle to ignite the fuel. So for a super-charged 306 i should be using the 95 octane fuels as the premium stuff makes no difference? If you say so ________________________________________ See the sheer power and might of the lesser known burrowing owl. |
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Posted 9th Mar 2012 at 09:31
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #21
Standard cars are mapped to accept 95 or 97, although the handbook does advise to use 97.  Obviously when a separate map is created then you should run with whatever fuel it was mapped on. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 9th Mar 2012 at 10:32
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woody.
Senior User  Location: London Registered: 18 May 2009 Posts: 806 Status: Offline |
Post #22
So why is it better to run 97 octane fuel on a boosted 6's? Just wondering really |
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Posted 9th Mar 2012 at 11:28
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owain
Seasoned Pro Location: Essex Registered: 20 May 2009 Posts: 9,185 Status: Offline |
Post #23
Lower octane fuels ignite more easily, so putting 95 in a car whose ECU is expecting fuel to not burn so easily can literally blow up your engine in seconds, as the fuel ignites before the piston reaches the top of the stroke. Pre-ignition or knock, can't remember which one. Pre-ignition I think. It's not that it's better, it's that it's absolutely essential if that's what your engine has been mapped for. ________________________________________ Membership expiring soon, get in contact on our new little forum project. |
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Posted 9th Mar 2012 at 11:30
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #24
owain wrote: Lower octane fuels ignite more easily, so putting 95 in a car whose ECU is expecting fuel to not burn so easily can literally blow up your engine in seconds, as the fuel ignites before the piston reaches the top of the stroke. Pre-ignition or knock, can't remember which one. Pre-ignition I think. It's not that it's better, it's that it's absolutely essential if that's what your engine has been mapped for. ^^This I would add that higher octane fuels can take more compression then lower octane fuels. It is therefore why you should use it in high compression engines, or engines that are low compression at build stage but when running boost create huge cylinder pressures requiring fuel that will take more pressure before self-ignitinng and causing detonation. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 9th Mar 2012 at 11:36
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adam b
Seasoned Pro  Location: The Nam Registered: 24 Jan 2006 Posts: 12,829 Status: Offline |
Post #25
Knock is when the fuel ignites before the spark has been introduced. Caused by having too low octane rating or high intake air temps.________________________________________ Nothing to see here |
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Posted 9th Mar 2012 at 11:39
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