Following on from my ‘is there a duck in my engine’ thread….please help me figure out what is up with my poor little van.
The van:
2002 Renault Kangoo in the sporty 1.2l petrol engine, with a dual fuel LPG conversion. Manual.
The problem:
In low rev’s (1-2k) if you put your foot down reasonably hard the engine noticeably stutters and you can hear a ‘pop’ like a big packet of crisps being popped open. Usually it is just a single ‘pop/stutter’ as you accelerate but if you really load the engine say low revs in 5th gear there are a number in quick succession.
After running the engine till warm the idle would be perfect then as though a cylinder had missed it would drop lower then pick up again, again just as though a single cylinder had missed.
Today I pulled the leads off one by one to see which cylinder it might be but they all sparked normally (as far as i can see) and the engine didn’t cut out.
I put in new spark plugs today and drove a few miles, I would say it was perfect initially and an improvement overall but if I put it in 5th and tried to accelerate the ‘pop’ came back.
What do you reckon folks?
I REALLY appreciate the help, I can’t really afford to go to a garage until the last resort.