miss fire

nathan

nathan

Member
miss fire SORTED

right i have a miss fire its not ticking over properly and runs up to about 3500 rpm then starts i have replaced the boost hoses and it is running sandard boost all so boost gauge only shows 0.3 bar any ideas chaps
 
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PobodY

PobodY

Moderators
Staff member
No fault codes?

If you're confident the boost hoses are all good, I'd check the MAF.
 
snoon

snoon

New Member
I would have said MAF but then you'd expect the error code to come up - It always did on mine when I had MAF issues.

Battery strong? Mine doesn't run right if the battery is slightly dead.
 
nathan

nathan

Member
Battery is strong alltho the conections aren't great the maf is very oily inside


ive cleaned the maf and it seems a little better id say the miss fire is at 4000 rpm runs fine up to there
 
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PobodY

PobodY

Moderators
Staff member
How did you clean the MAF; get some acetone or iso-propanol on the hot wire?

Could be further up; how's the PCV? One of the reasons that gets removed is that it's a whole load of pipes exposed to crank case fumes which can corrode and leak.
 
nathan

nathan

Member
right sorted it now the new leads are copys so put old ones back on and hey presto sorted cheers chaps
 
olliecast

olliecast

Active Member
Was going to say leads.
Mine had some silly blue uprated ones on. Started missfiring, put some standard ones on and hey presto.

Glad you sorted now
 
PobodY

PobodY

Moderators
Staff member
It's funny how often "uprated" leads cause this problem... in fact there are a few "uprated" pieces that these engines don't like.
 
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