2.0l Aircooled - Rough mid range
Posted: 20 Mar 2007, 21:06
This is starting to get anonying now. My 2.0l a/c has an intermitent issue that I can't get to the bottom of.
To give the background I have already changed the following to stop this issue; HT leads/Coil/Dizzy Cab and rotor arm. I have also noticed a rotten fuel line so changed the fuel lines and filter. Finally the idle value was loose so that was fixed.
The van starts fine every time, and idles no problems (since the value was sorted). It will run fine (and very nicely) for days.
The Problem is sometimes the midrange gets really lumpy, if I give it some gas then the engine will rev fine and it evens out and if I let it idle again no problem. Although once back in mid range it starts up again. Once to problem occurs it will not go away until I let the engine cool.
Now it only does this from time to time and normally when the engine has been run left for an hour or two and then used again. It also backfired once during while playing up, the first time it has done that.
Still to check is the timing and plugs (they were changed in the summer and have about 1500miles on them).
Any pointers?
To give the background I have already changed the following to stop this issue; HT leads/Coil/Dizzy Cab and rotor arm. I have also noticed a rotten fuel line so changed the fuel lines and filter. Finally the idle value was loose so that was fixed.
The van starts fine every time, and idles no problems (since the value was sorted). It will run fine (and very nicely) for days.
The Problem is sometimes the midrange gets really lumpy, if I give it some gas then the engine will rev fine and it evens out and if I let it idle again no problem. Although once back in mid range it starts up again. Once to problem occurs it will not go away until I let the engine cool.
Now it only does this from time to time and normally when the engine has been run left for an hour or two and then used again. It also backfired once during while playing up, the first time it has done that.
Still to check is the timing and plugs (they were changed in the summer and have about 1500miles on them).
Any pointers?