gsi misfire

[cavaliersri]

hi
can anyone help me please.iv just bought a gsi 4x4.it idles fine bit misfires under load.the car was garaged for 6 years until recently
iv changed the plugs but this didnt help
its a 2 lirte redtop sfi

please help.its pisxing me off now
thanks

[gsi pie]

aint this one your selling?

[hamishvaux]

What have you tried?

[Greig Sri]

Have you tryed the dis. cap, rotor arm, coil, plug leads and dose the early xe have an igintion amp module?

Greig

[cavaliersri]

yeah am selling it but needs to run right.iv only tried plugs so far.im gona try leads/cap/rotor arm tomoro.just wondered if u guys thought it might be something else.im not too clued up on the redtop engine.lol

[hamishvaux]

I would try those first. Bang some fresh fuel in if its stood so long aswell.

[cavaliersri]

hi.just another quick update.iv just changed the dizzy cap/leads/rotor arm also stuck £20 of fuel in and still no joy.still missing under load.do you think a fuel filter is in order as car sat for 6 years.it idles fine and drives.its only when you put the foot down thai is misses.can it be a cam shaft sensor.any help would be greatly appreciated.

[gsi pie]

could be fuel presure reg

check TPS

[cavaliersri]

sorry,i meant crankshaft sensor.lol

[cavaliersri]

what does tps mean?

[cavaliersri]

thank god i have u guys to ask questions to.lol.am i right in thinking that the fuel filter/pump is located on the n/s/r of the car next to the chassis leg.

[gsi pie]

fuel pump ser up is driver side rear

remover rear wheel and youl see it

tps = throttle position senor on throttle bodie under sfi box

[cavaliersri]

thanks for the help ill go have a look.my mates gona drop me off a crank sensor and tps later so will try them too.

[gsi pie]

take note when you remove tps as it just dont bolt on

it can be adusted etc

[planetc]

Also make sure that the plug for the maf is not poking up in the air and is well tucked down ( loosen the hoseclips and twist the pipe). If they are sticking up then they can rub on the underside of the bonnet and upset it when you are under load.

[cavaliersri]

thanks.ill have a look at that later.but too cold outside for fixing cars.lol

[dingdongbells]

i had a prob like this in one of my old gsi's
idled perfect and drove prefect
but when i went to get it to her she missed

i tryed everything
it turned out the fuel line from the pump and worn away and was leaking but it was very had to find it,

[Gray16v]

mine was a knackered Fuel pressure regulator and injector, changed the fuel rail and its perfect

[cavaliersri]

hey folks thats
plugs
leads
rotor arm
dizzy cap
engine temp sens
crank sens
fuel filter
tps

all been changed.it seems to miss more when it warms up.

where do i go next.
i think the oil cooler mite be leaking oil into the water.would this cause a misfire?

[Gaz]

Its impossible for the oil cooler to leak oil in the water as it doesnt have water in it.

Have you tried another afm? Tried unplugging the lambda

[cavaliersri]

it dont think it has a lambda as i couldnt find it.iv just had a afm dropped off so im gona try that tomoro.

[cavaliersri]

sorry.yeah it does have a lambda.i just found it.lol

[cavaliersri]

hey.just like to say a big thank you to everyone for answering my questions but i have another one for you.iv noticed my car doesnt have a catalyst.can anyone tell me the month/year that you need a cat.mine is a 1992 on a k.thanks for your help i really appreciate it.

[planetc]

I might be wrong, but I seem to recall all k plate cars required that cat tests. Basically Aug 92 onwards. Have you sorted the misfire now?

[btcctroy]

I've heard that it became compulsory in 94 dunno If this is true