Is the engine standard?

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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

Ok and you say it hesitates. Do you have full power after the hesitation stage that you have stated? The first thing I would check is the plugs. Are they in good condition? Free from burning or any oil deposits.

I would them check the map sensor and tps etc. Check the sensors with the engine running and if no change then the sensors are fine. If you unplug the map sensor it should cough and splutter along with a hestitation and then full power.

Maybe check the throttle body is wide open when the pedal is pushed to the floor.

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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

just upluged both sensorson the throttle bodie and the car didnt lose revs, or cough splutter

ive pulled the pipe off and it coughs n loses revs, the tps didnt make no difference when i unplugedit

Matt the S16 is a different set up to the GTi even though they do share some sensors (the MAP is not one of them, it's built into the ecu on the S16)

The diaphragms not opening properly will more than likely be a vacuum problem if they are both doing it.

Have you replaced the vacuum piping? as the original pipes will be hard and perished by now which will cause leaks even if they look ok.

It may be that one of the diaphragms has a split in it but they normally fail completely if it does. Other than a leak it could be the vacuum pump not working properly or a leak in any of the vacuum pipes (are your brakes working as they normally do or do they need more pressure on the pedal?).

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When I've got time I forget what I wanted to do, and when I remember what I wanted to do, I have no time!

ive got silcon vac hose from the diaframs to the ecu,
yeah both diaframs are only half opening, when looking at them it looks like they hesitate when opening,
i have recently noticed like a high pitched noise sounds like air leaking but when i push the pedal it goes,
someone told me to spray brake/clutch cleaner over all vac pipes n it'll rev if theres a leak there, is this true n be worth doin?
Cheers guys

ok mate ill check that,
ive also just had alook at the diaframs, i took one of the vacs of one diafram and reved it and it opened all the way, done the other diafram and that one only opened halfway,
so that tells me its the diafram?
does anyone have a right diafram?

oh sweet that safes me the hassle i got a spare,
Cheers mate

yeah the vac pipes do go to the solenoid valve aswel, i just wasnt sure what that part was called