running problems :)

[Jam TVR]

Well a couple of weeks ago my 4.2 started running a tad rough, i went to the local tunning shop and he said that my inlet "o" rings are letting in air on one side, a quick call to tvr power for the parts, when they came i fitted them. the problem went straight away and the car was perfect.

over the last couple of days i have been driving the car as the weather was ok around here. yesterday it started out of the blue with the same fault.
its not like it got hot or i drove it for a longer time than i have done as i was only out in it an hour befor it started playing up.

do you think this could be another fault other than the o rings?
i am a bit lost as what to do now other than replace them again.

is there another fault that can cause them to go?

any help would be great.
cheers, james

[BLUETHUNDER]

What sort of running problem is it??Rough running, only running on four cylinders etc??

[Jam TVR]

BLUETHUNDER said:

What sort of running problem is it??Rough running, only running on four cylinders etc??

well last time it was blacking up the spark plugs, over fueling on one side.
after i replaced the o rings this problem went.
yes its idle is rough and hesitates when under load.
could this be more than just the o ring seal's that is causing the problem?
i thought mabe the buterfly's could not be closing or sealing correctly. could this be possible?

Edited by Jam TVR on Saturday 15th March 18:42

[BLUETHUNDER]

Jam TVR said:

BLUETHUNDER said:

What sort of running problem is it??Rough running, only running on four cylinders etc??

well last time it was blacking up the spark plugs, over fueling on one side.
after i replaced the o rings this problem went.
yes its idle is rough and hesitates when under load.
could this be more than just the o ring seal's that is causing the problem?
i thought mabe the buterfly's could not be closing or sealing correctly. could this be possible?

Edited by Jam TVR on Saturday 15th March 18:42

I would suspect duff throttle pot or coil pack.Also check the loom going in to the TP.these can chafe on the bonnet.

[Robertjp]

did you replace the plugs?

If not, that could be your answer.

Could also bE HT leads or coil packs...

[Robertjp]

did you replace the plugs?

If not, that could be your answer.

Could also bE HT leads or coil packs...

[Jam TVR]

BLUETHUNDER said:

Jam TVR said:

BLUETHUNDER said:

What sort of running problem is it??Rough running, only running on four cylinders etc??

well last time it was blacking up the spark plugs, over fueling on one side.
after i replaced the o rings this problem went.
yes its idle is rough and hesitates when under load.
could this be more than just the o ring seal's that is causing the problem?
i thought mabe the buterfly's could not be closing or sealing correctly. could this be possible?

Edited by Jam TVR on Saturday 15th March 18:42

I would suspect duff throttle pot or coil pack.Also check the loom going in to the TP.these can chafe on the bonnet.

thanks mate, does seem like when i done the o rings i mite of moved/knocked the tp or throttle pot an thats why it worked for a short while.

an yes changed the plugs and leads when i first had the car as i was told they soon break down with the heat off the manufold so i thought best change them when i had the chance.

thanks for all your help guy's. i will look into it and keep you all up to date.