6 replies to this topic

[furtive]

I've* fitting a Larini and removed the pre-cat, which sounds great. However, the car now occasionally suffers from hesitation at low revs, for example when approaching a roundabout. It sounds like the car is only running on 3 cylinders for a few seconds and is then fine again.

 

It's did it once on a short test drive after doing the work on the car, and then twice more when I went on a longer drive.

 

Any idea what could be causing it?

 

*I made the tea and made encouraging noises.

[fezzasus]

Car has short term fuel trims which will need adjusting now the exhaust is different (particularly removing pre-cat). I'd keep an eye on it and see if it's there after 100 miles.

[furtive]

Ok, thanks. The 70 miles to Snetterton at the weekend is the next time I'll get to try it properly...

[slindborg]

I can chuck about 80 miles on it by going to meetings in Welwyn Garden city this week

 

 

Having read a similar thread on here, it turned out to be a cracked spark plug insulator..

As it seems to only happen at low revs, there must be something particular about the load to cause it. Initially I thought it could have been the EGR valve playing up as it started to misfire when warm, but then didn't happen often enough to be the EGR valve.

[furtive]

Thanks for the offer

 

I'm going to "work" from home on Wednesday so that I can put some miles on it before the weekend

[furtive]

This seems to has fixed itself now

[slindborg]

Phew. I hereby declare it's a 300b*hp slinderella stage 1 setup now. *bollocks

Edited by slindborg, 23 September 2015 - 05:11 PM.