fuel, misfiring problems???
#1
fuel, misfiring problems???
Hello all, my wifes car just started playing up 98 Classic Turbo UK model, drive car to work ok, drive home ok, drive to shop and back car then starts to misfire, hesitent to rev, trying to cut out but only when engine hot, feels like water in fuel but not sure because bought fuel from different stations.
any idea Guys.
cheers jason
any idea Guys.
cheers jason
#2
could be a number of things.
are the fans coming on straight away. If so its the engine temp sensor.
but sounds like a doggy fuel pump to me, happened to me on several impreza's. start messing around like you say, then they just die when you least want it to
are the fans coming on straight away. If so its the engine temp sensor.
but sounds like a doggy fuel pump to me, happened to me on several impreza's. start messing around like you say, then they just die when you least want it to
#3
could be your MAF sensor or boost selenoid! try taking off your boost selenoid and cleaning with a bit of brake cleaner...
if you think its bad fuel, try adding a little octane booster
good luck
if you think its bad fuel, try adding a little octane booster
good luck
#5
Here
https://www.scoobynet.com/general-te...-solenoid.html
But doubt it is that unless you're talking about hestitation due to overboost (ie, 4th or 5th gear with your foot to the floor)
https://www.scoobynet.com/general-te...-solenoid.html
But doubt it is that unless you're talking about hestitation due to overboost (ie, 4th or 5th gear with your foot to the floor)
#7
ok, got car back home, thought the dreaded head gasket had gone, could still be te case, removed and flushed rad, ripped thermo out, changed plugs, car boosts OK, gave it large and performs ok, but gentle driving car seems hesitant not smooth like it used to be.
any ideas cheers jason
any ideas cheers jason
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#8
i reckon you should change your air filter/induction as if it dirty or blocked, you could be sucking in contaminated air or not enough air for the appropriate air/fuel mixture (charge). your maf sensor could be playin up your response
good luck
good luck
#9
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I am having a similar problem. Part throttle epsecially from cold I get a missfire so bad it is like a mild kangarooing, full throttle seem fine?. Im poping down stairs in a min to inspect the spark plugs for clues. If that throws no light on the subject (eg gaps or coilpacks) I'll do a compression check, then pop them back in then get the brake cleaner on the MAF and boost solenoid. If all that fails then I will start looking at fuel pump and filter, fingers crossed it wont go that far
#10
I am having a similar problem. Part throttle epsecially from cold I get a missfire so bad it is like a mild kangarooing, full throttle seem fine?. Im poping down stairs in a min to inspect the spark plugs for clues. If that throws no light on the subject (eg gaps or coilpacks) I'll do a compression check, then pop them back in then get the brake cleaner on the MAF and boost solenoid. If all that fails then I will start looking at fuel pump and filter, fingers crossed it wont go that far
#11
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All I ended up doing was taking out the plugs, which had some grey deposits on them, gave them a clean, cleaned the maf and cleaned my airfilter all with.......carb cleaner! When I first Drove he the problem was still there but alot better, and as it warmed up it drove fine again. The final test will be tomorrow, from cold but so far so good.
#13
well, cleaned MAF today with elec contact cleaner and no better or worse, still hesitates until 2500rpm then goes like a wippet, very confuesed.
any ideas
cheers jason
any ideas
cheers jason
#14
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How far did you drive it? It took mine for a 30-40 mile trip and it didnt get better till atleast 10-15 miles in
Last edited by wrxpablos; 03 June 2007 at 05:56 PM.
#18
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Yeah mine has come back. Its still there just very slight compared to how it was. Moneys on the coilpacks methinks. If you have a multi meter you can check the resistance on the packs to see if there fubared.
#20
All sorted, took car to ACE MOTORSPORT today 01495 244555, Andy nice chap, new MAF, £358 with diag, car runs a dream, def going to use agian and def recommended.
cheers jason
cheers jason
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