I have a 1998 type R and since i fitted a walbro fuel pump is seems to have aquired a misfire.The car drives fine if you drive 'sensibly' but if you plant your foot it misses like mad,could it be just the plugs/leads breaking down or is it a bit more involved?

 

Have you a fuel reg fitted?

 

im running the std reg at the moment i do have an FSE lined up as a replacement in the very near future,its also being remapped on 1st July

 

Is it not over fueling maybe, did you cut of the 12 to 9 volt resistor?

just a thought though!

 

or could just be a coil pack, maybe mass air flow sensor,

 

Yes i removed the resistor.After trawling through numerous posts on the resistor issue i decided to remove it and store it somewhere so im running at the full 12v i thought it might be pumping too much fuel in and flooding the engine at WOT but wasnt sure.I'll whip the plugs out tomorrow and give them a clean and a re-gap and see how it goes.Hopefully once the remap has been done it will run sweet again as it was only mapped for the std pump first time round

 

im sure a map will sort the probs, whos doing the mapping?

 

Simon aka Jolly Green Monster is doing the good deed as AndyF is too far away and has a very hectic schedule

 

where abouts is the jolly based, as im also after a remap?

 

Also scotts is to far!

 

I would say the pump coul dbe a coincidence and plugs and coils are first port of call. Running a bit too rich won't cause a misfire would it?

 

who knows,im beginning to wonder myself

ps Jolly is based in the South East

 

thats just where i am, maybe he will remap mine at a cost,?

 

YHPM although bit worried you won't like my gold wheels. lol

Simon

PS: You imposter

 

I agree it could be over fueling due to pump and standard reg..

worth replacing plugs though.. set the gaps at 0.7mm etc..

Simon

 

Gold wheels are chav,

Though imposters are worse???