Intermittent Misfire on my car? What should i check?

[Paddy_g46]

Basically up to 2.5k revs it can misfire and judder with no power then suddenly it will stop and the car goes as normal. Has been getting graduallty worse for last week and now does it alot more then before, although it doesnt always do it :S.

Mates reckon i should check my leads/plugs/dizzy cap/rotor arm?

Im pretty sure it is an ignition problem, just not sure how to check it etc?

Suggestions?

This is a valver btw!

 

[Paddy_g46]

bump?

 

[crofty66]

Had exactly the same problem with mine this week just after i had it serviced.It was right up to 2.5k and then it would stop. It was one of the ht leads, if you wanna check it to be sure. remove the engine cover, get the car some where dark(in a garage with the lights off) and get someone to look at the leads when you floor it. You will more than likely see the lead/s arking onto the manifold/engineblock. Obv it could be something different but it sounds way to similar to my prolem to not be worth a look. let me know how you get on. crofty

 

[bearne1]

Had exactly the same problem with mine this week just after i had it serviced.It was right up to 2.5k and then it would stop. It was one of the ht leads, if you wanna check it to be sure. remove the engine cover, get the car some where dark(in a garage with the lights off) and get someone to look at the leads when you floor it. You will more than likely see the lead/s arking onto the manifold/engineblock. Obv it could be something different but it sounds way to similar to my prolem to not be worth a look. let me know how you get on. crofty

I think I am going to try leads next - www.performanceleads.co.uk seem cheap!

 

[crofty66]

yea, i was told to get them in would be 103 quid!
went to k-tec and ordered magnecor ones for about 60. will update this thread when i fit them on monday.

 

[bearne1]

Ordered mine at a discount rate and arrive next week.

Let me know how it goes, the garage trick looks good to see if any spark is spotted.

Thanks all.

 

[Paddy_g46]

Iv just whipped my dis cap off and i cannot see any metallic bits in the corners at all!!! Surely i should be able to see soemthing? And the rotor arm contacts looked fooked and black!

 

[crofty66]

new leads fitted, mint. picks up no problem now and a lot smoother.

 

[bearne1]

Excellent, cannot wait to fix mine!

Was yours misfiring on idle too?

 

[crofty66]

yea, on idle and up to 2.5k. at times it did it right through the rev range. well happy its sorted now tho.

 

[bearne1]

Yeah I bet.

Good news.