Rough running up to 2000rpm
Posted: Wed Apr 07, 2021 4:46 pm
Hi guys, my 1979 Z is running a bit rough in low revs.
I thought it was carbs, but my mechanic tuned them.
What happens is: below 2000rpm, it feels like the engine is running on 4 or 5 cyls, a bit like when the petrol is running out and you have to turn the petcock to reserve. After 2000rpm it runs great.
I have aftermarket exhausts (similar to original but a bit louder).
Not really sure if this is electric or carb related, but maybe you guys can give an idea of what might be happening? Maybe one of the coils? Maybe the spark plug cables? Maybe none of the above???
Any help would be greatly appreciated.
Thanks
I thought it was carbs, but my mechanic tuned them.
What happens is: below 2000rpm, it feels like the engine is running on 4 or 5 cyls, a bit like when the petrol is running out and you have to turn the petcock to reserve. After 2000rpm it runs great.
I have aftermarket exhausts (similar to original but a bit louder).
Not really sure if this is electric or carb related, but maybe you guys can give an idea of what might be happening? Maybe one of the coils? Maybe the spark plug cables? Maybe none of the above???
Any help would be greatly appreciated.
Thanks