not running right. what to check?

[dj-rix]

car keeps juddering when it sees any boost. what should i check? if i accelerate slowly without hitting boost it drives fine.

tdo4 with ext waste gate, running 0.8 bar. FCD and FPR..

 

[dac69er]

sounds ignition related. what are your plugs, leads, distributor cap and rotor arm like?

if they all check out do an ecu error check and see if you get any error codes.

 

[dj-rix]

TRD leads. dizzy and rotor are about 3 years old. was running fine before, i had to take the box off because the clutch fork snapped, now its all back together it doesn't seem to be running right..

 

[dac69er]

could be coincidence. are the trd leads 3 years old too? what about the plugs?

do you get an engine light come on when it judders?

 

[dj-rix]

no, engine light doesn't come on.. plugs and leads are 3 years old aswell... suppose i could try the leads in a mates car to rule that out.

 

[dj-rix]

just removed the king lead, the tip was snapped and stuck in the dizzy. jus put a different king lead in, car now sounds like a scooby...

 

[dac69er]

think you have located a possible problem

 

[aidan]

try changing the rest of the leads and plugs too

 

[hubbygt]

think you have located a possible problem

X2

However I also had this problem before and it turned out to be my lamda sensor. But in this case I'd put money on it being the leads.

 

[dj-rix]

put new plugs in, problem is now worse..takes a while to start.. sounds even more like a scooby now

 

[dj-rix]

just replaced the leads, seems to be fine now!! thanks for the help guys