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miss/flat spot under load.

Wombles

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Seems im getting a miss/flat spot under load when accelorating. Sometimes it even backfires in the engine bay.
Could it be a coil on the way out or DFI?
Doesnt do it when in park.
 

Wozza

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yeah and leads braking down....is another common cause
 

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Good point Wozza.
Tomorrow ill pick up plugs and leads.
Think they're like 2 years old. Maybe 3.
 

immortality

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I had the problem with the missus car, hers was leads but not before replacing everything bar the CAS and multiple sets of leads. I have the OEM Bosch type leads now and no more problems.
 

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It just so happens this arose after I did the o-rings..
Only happens when warm it seems.
 

Brett_jjj

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Ive seen faulty ignition coils cause very similar problems..
 

Wombles

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Update on this: Changed leads and plugs. Think they're 50k old...
Number 1 cylinder, first one tackled, after pulling off the lead off the coil, the rest came with. Ended up being a 3 piece lead.
 

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Better. But I think I still felt a miss/backfire.
 

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Then I would consider looking at the coils.

I would also run some injector cleaner and maybe change the fuel filter if it hasn't been done in a while.
 
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