Tick over high

[french dave]

Hi all,help reqd! Fuel problem -see last post.Fuel Hesitation at bends and pulling away hard.Air intake pipe found to have air gap at engine side so pipe/clip repositioned /retightened.Ran to work this morning started fine,no hesitation but when stopping at traffic lights after 6 miles tick over very high.Cleaned all plugs onto WUR,AAD,TTS and FSV with contact cleaner.No change driving home.? When pipes off AAD can see not fully closed engine hot and same when cold? Dave .car daily runner!

[french dave]

Hi,are there 12v + - supply to some/all sensors plugs with ignition on and or with engine running?that I could check Dave

[french dave]

Hi,Update -AAD working ok.Resistance checks ok on AAD and WUR.Found vacuum leak - pipe from rocker cover breather to rubber cap over air sensor plate.New pipe fitted.Later ,car ran,idle back at 800.Hesitation showed up again (previous post) after being stuck in stop/start traffic for 1/2 hour.Hot day.pulling away from standstill at traffic lights 1st 2nd and 3 rd brief hesitation in those gears.When reaching home turning into our road - brief hesitation! So not sure if fuel surge (swirl pot needed?)dirt in fuel system? (Injection cleaner/new filter?) another vacuum leak? Ignition fault ? though no other indications.Fuel mixture - too lean? too rich? Any other ideas most welcome.Ran ocassionally in colder winter months no hesitation.Will run to work again tomorrow see if it hesitates on way to work in less stop/start traffic? Dave

[french dave]

Hi all,thanks for all your inputs ,very much appreciated by a newbie wedge owner.Ran to and from work today -total 32 miles.Weather cooler than it has been.No hesitation in straight line driving.1 minor hesitation on a bend in retail park! Just under 1/2 tank of fuel .Will monitor over the next few days -await warm weather ! Changed loose pipe from rocker cover breather to plenum rubber cap -tighter fit and jubilee breather end.Breather loose in rocker cover -seal brittle so will replace -source anyone?wrapped in tape higher up now tight fit.Nipped up various clips and bolts.jubilee clipped pipe from brake vacume servo unit.
Andy - regulator check -sorry check vacume pressure at which end?
Mark - battery leads secure.Will probably fit swirl pot anyway,just my time/cost and change filter.Do you think it's worth fitting pre pump post swirl pot additional filter?
Adam - main breather pipe blown down and decompression heard/felt.sorry didn't quite understand water spitting out? and throttle pot settings? Air pipe too colder source -good idea - at moment there's no pipe so probably just getting warm air from engine bay,also fwd bonnet vent above this area has been blocked ?so could re-open.
Many thanks again -look forward to any replies Dave

[french dave]

Hi all,thanks for all your inputs ,very much appreciated by a newbie wedge owner.Ran to and from work today -total 32 miles.Weather cooler than it has been.No hesitation in straight line driving.1 minor hesitation on a bend in retail park! Just under 1/2 tank of fuel .Will monitor over the next few days -await warm weather ! Changed loose pipe from rocker cover breather to plenum rubber cap -tighter fit and jubilee breather end.Breather loose in rocker cover -seal brittle so will replace -source anyone?wrapped in tape higher up now tight fit.Nipped up various clips and bolts.jubilee clipped pipe from brake vacume servo unit.
Andy - regulator check -sorry check vacume pressure at which end?
Mark - battery leads secure.Will probably fit swirl pot anyway,just my time/cost and change filter.Do you think it's worth fitting pre pump post swirl pot additional filter?
Adam - main breather pipe blown down and decompression heard/felt.sorry didn't quite understand water spitting out? and throttle pot settings? Air pipe too colder source -good idea - at moment there's no pipe so probably just getting warm air from engine bay,also fwd bonnet vent above this area has been blocked ?so could re-open.
Many thanks again -look forward to any replies Dave

[french dave]

Hi all, Mark - I will try your test on the manifold inlet gasket.ive noticed what looks like an oil leak in front of the distributor (thought initially the r/h rocker cover was leaking)and can just about see what looks like a small piece of gasket material protruding??? Dave

[french dave]

hi all,mark tried your test - as soon as cap removed it stalls! hesitation came back in straight line.if i change inlet manifold gasket do i have to remove injectors and change seals before refit? thanks dave

[french dave]

Hi,as soon as I remove the breather cap/oil filler or pipe to it the engine stalls.Joe the former owner whom I'm still in touch with has been following the problem and wondered if I'm getting fuel vapourisation where the left hand exhaust (new) comes close to the feed / return pipes just infront of the pump/filter/accumulator as its seems hot weather plays a factor? I could make a heat shield to cover the pipes -see if that makes any difference?i didn't have this problem in the winter ( though I hardly used the car) and runs better in the morning drive to work - cooler and less traffic.new exhaust could be sat nearer the pipes -I carnt remember how close the old one ran ?

[french dave]

Hi Mark,PCV? Not sure what I'm looking for there -sorry.pics below. dave

[french dave]

[french dave]

[french dave]

[french dave]

[french dave]

[french dave]

[french dave]

Hi,pcv working ok.Ran to work no problem,coming home in traffic/ heat , hesitation every time I pulled away from a standstill and went flat a couple of times.Hesitation/stalled after twice turning roundabout/junction close to home.Think I will order new fuel filter and inspect ignition system.See how it runs in the morning. Dave

[french dave]

Hi Mark,I'm of the same thoughts.im going to have another look at the pump -feed connection and all pipework around it feed and return.If nothing found I will order new filter and probably a pump ! There's always the swirl pot option .Could just fit filter and try it , if no better swap pump.This is my daily driver and seems to be getting worse. Dave

[french dave]

Hi Mark,checked pump -electrical connections solid.Feed pipe out of pump jubilee clip managed a few turns tighter.All pipes ,tees ,jubilees OK in tank/pump area.Followed solid pipes to engine bay,then onto hose.Where pipes run up to fuel distributor (feed and return) they had been try-wrapped to the radiator upstand and were 1/2 crushed! I've removed the ty-wrap and the pipes are free and full shape again. So there's not much else to check ,if no improvement tomorrow then filter/pump will be ordered.Dave

[french dave]

Hi Mark,nope! Still the same.New pump and filter should be with me tomorrow! Dave

[french dave]

Hi,think that's done the trick! New pump and filter - no hesitation in straight line and none after bends/roundabouts.i keep waiting for the hesitation - but nope ,nothing.Thanks for all inputs,wealth of knowledge.ive learnt a lot about the fuel and injection system on this car -so no bad thing.