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Author Subject: Compression test results
sixygti2

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Location: Tunbridge Wells

Registered: 21 Apr 2007

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Post #1
Ok did a DIY test today, but having just read other threads I think I may have done it incorrectly! Unsure

Anyway from the cambelt end the results were:
1=150
2=140
3=140
4=160

What I think I did wrong was doing it when the car was cold, and not on WOT, I just started the car and let it idle for a few seconds!

So at first I thought these were terrible results, but maybe not if my method was wrong!

Any advice on this? Also used a tester which had a flexible hose so couldn't tighten it up as much as it probably should have been!? Unsure

Muchios Grassyarse

Steve

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Posted 18th Feb 2011 at 20:40
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phillipm

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Location: Rotherham

Registered: 15 Oct 2006

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Post #2
Probably about right for a closed throttle, you're not actually supposed to start and idle the car though LOL

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Posted 18th Feb 2011 at 20:52
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sixygti2

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Location: Tunbridge Wells

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Post #3
What do you mean?

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Posted 18th Feb 2011 at 20:53
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jose

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Location: W.London

Registered: 05 Oct 2008

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Post #4
did you not read the instruction??

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Posted 18th Feb 2011 at 21:47
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ballardpaul

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Location: Croydon

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Post #5
Your meant to just turn the car over untill you get the highest reading. Throttle has to be open fully as well to get a good result.

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Posted 18th Feb 2011 at 21:48
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sixygti2

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Location: Tunbridge Wells

Registered: 21 Apr 2007

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Post #6
It wasn't mine, a work mate brought his tester in, so not sure.

Think I'll need to do it again! Do you take out one plug at a time or all of them when doing the test?

Thanks for helping with my dunce-ness!

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Posted 18th Feb 2011 at 22:35
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rallyeash

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Location: Devizes

Registered: 11 Dec 2006

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Post #7
aslong as there in 10% of each other should be fine (which they are)

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Posted 18th Feb 2011 at 22:37
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