hi thanks for having me i have a problem i have a audi a4 1.8 reg 1999

one night driving back home floored it a bit EPC light came on and would not go over 4000 revs and no power

car starts but very lumpy on idle 

and jumps like a frog when driving ??

checked with meter no error codes at all when guy came out >?

he suggested new coil pack im a bit sceptical  about buying something that might not fix problem  

wondered if u guys could help me out knowledge wise if any thing like this has happened 

thanks in advance

 

Hello Chris,

Although I would  guess that this car is a little early to benefit from all the current plug-in information which is now available (I'm sure others will enlighten me on this ) then surely it would tell you whether one or more cylinders are not firing. If all else fails why not disconnect each plug lead/ coil pack, one at a time, to see which one make no difference when disconnected. 

Kind regards,

Gareth.

Check your front engine mount

How is the front engine mount related to misfiring? Please enlighten? 

If the front engine mount deteriorates past a certain amount it allows the engine to move around too much and this can feel like a misfire creating imbalance.

 

 

Thanks for the explanation. Makes sense. Cheers.