yesterday i had this same problem but it went away after a couple of wiggles of various connectors

today i had just done about 30 mile when slowing down at a junction the engine went lumpy again.

when i pulled over the right exhaust seems heavier and intermitent(like a v8-10 engine sounds)

left zorst pipes are week and about half the normal pressure is coming out

the car has low power but will still boosts to about 5psi(didnt dare push it any harder)

also while driving the car judders slightly but enuff to notice

can anyone help?what should i look at on my car.

ive done an ecu diag and its 55,,ok

 

ive just put a new ptu in so i am hoping its not that

 

anyone????

Poss. injector or coil connectors. When it's running rough try disconnecting the spark plug leads one at a time. When you find the one that doesn't make any difference to the engine note/speed then you have identified the cylinder that could be causing the problem. Then you have to work out whether it's fuel or electrical. Having a Consult/ConZult would help.

cheers bud,wat will i have to do if its fuel problem?

is the car ok to drive ?(i guess so as ive just drove it back 10 miles)best ask tho as i'll have another 10 mile to go to get it to a garage.

 

gonna try the plugs now,i'll let ya no .

many thanks mate ,jay

Jay, if you can get the car to me I'll check it out for you. I'm near Preston, Lancashire. Let me know - lots of possibilities really....

 

CheerZ,

 

Andy

Yea J get yourself along to Muffmans,he knows his stuff,wont rip your fuckin eyes out either.

 

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andy its number 6 i pressume?the one at the back to the right (near the battery)

when you look at the engine do the right sided plugs run to the left exhaust and vice versa?

or do the right side cover the right exhaust?

 

I think this is what you're asking :-

 

firing order - 123456???????

 

is that right???

 

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I feel the need, the need for speed!

 

Jay,

 

I had exactly the same problem last year and as suggested then/now it turned out to be a coilpack (number 6). It had just come off slightly but enough to cause the problem.

 

Good luck

 

Vijay

can anyone explain what i should do as ive never changed the spark plugs(coil pack)(i looked and it just seemed that i would need to loosen a couple of screws .

is this what i do?there is no secret handshake or anything is there?lol thanks jay

andy also i went through all the plug connectors(disconnecting them)and i didnt see much difference in the car,watever combination.any more ideas m8

Jay

I had the same problem on my Z. One of the coil connectors was coming loose under vibration. Every so often I'd have to push the coil connector down to make contact with the coil pack. At idle you can feel the car give a slight judder-one cylinder not firing. I've bought some spair connectors and am trying to figure how to rewire/swap the defective connector...I was almost there but strangely enough the connector hasn't come loose for 3 months now.

You want to try and gently pull one connector out at a time and you should find the defective connector. DO NOT PULL TOO HARD THOUGH otherwise you'll probably make them all break their clips-they're very brittle and are too easily broken due to the heat in the engine bay.

I hope this helps.....it took me 2 months to realise what the problem was.

Laterz

Van

Injector connector/CAS connector/PTU connector...

 

These need checking Injector connectors are a PITA to do.

 

CheerZ,

 

Andy

just opened up my old PTU, 2 of the connections had come off,im gonna fix it so i'll have a spare incase my other goes on me.

Originally posted by jaylox:

just opened up my old PTU, 2 of the connections had come off,im gonna fix it so i'll have a spare incase my other goes on me.

J it wont go on you,It is the series 2 PTU,mount it on your inner wing like Harve,and you will have trouble free PTU syndrome .

 

 

 

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ive just checked the volts to all the connectors,and they are all fine !

tried disconnecting all the connectors and found that the 1 where there was no change was number 3

right now i no that there is a spark to all cylinders,what is the next procedure and is it hard

im guessing that im gonna have to order some coil packs/maybe injectors

 

Originally posted by andyduff:

Injector connector/CAS connector/PTU connector...

 

These need checking Injector connectors are a PITA to do.

 

CheerZ,

 

Andy