RickyJ
21st April 2005, 12:32 PM
I've just bolted a DCNF onto my VX coupe and am having major problems with it - It won't Idle below 3000 rpm even with the Idle Screw completely backed out . Before I see sense and put the 36DCA back on I'm hoping somebody can give me some ideas.
The Settings I'm running are:
28mm Chokes
145 MainMain Jets 145
180 Air Corrector
50 Pump Jet
200 Needle Valve
The Car was a bit rough at idle with the Old Carb which I think was the Auto Choke not disengaging 100% - It didn't work nearly as well as the one on my Old VX anyway
I've checked that the Throttle plates aren't sticking and that the linkage is moving freely which it is. I had to move the car earlier and when you stick it in first gear the Revs do go down to the expected level and it drives OK with no hesitaion/flat spots.
The really odd thing is that I was fiddling with it earlier I had it Idling
at around 1000rpm - I then turned the Engline off, replaced the Air Filter housing and restarted it and it was back to 3000 or so.
The 2 things I've come up with are that either the Idle Jets are wrong (these haven't been changed from standard) although I'm not sure this would make the thing idle quite that high? OR an air leak somewhere - I've visually checked things like the Brake servo Vacuum hose and this seems OK. The Carb was obviously new when I got it but as it'd been sat around for a few years it's had the pump jet/main gasket changed, the only one I've not done is the Choke cover gasket , but I can see enough Air leaking in thru that to be causing this.
PLEASE HELP!!
The Settings I'm running are:
28mm Chokes
145 MainMain Jets 145
180 Air Corrector
50 Pump Jet
200 Needle Valve
The Car was a bit rough at idle with the Old Carb which I think was the Auto Choke not disengaging 100% - It didn't work nearly as well as the one on my Old VX anyway
I've checked that the Throttle plates aren't sticking and that the linkage is moving freely which it is. I had to move the car earlier and when you stick it in first gear the Revs do go down to the expected level and it drives OK with no hesitaion/flat spots.
The really odd thing is that I was fiddling with it earlier I had it Idling
at around 1000rpm - I then turned the Engline off, replaced the Air Filter housing and restarted it and it was back to 3000 or so.
The 2 things I've come up with are that either the Idle Jets are wrong (these haven't been changed from standard) although I'm not sure this would make the thing idle quite that high? OR an air leak somewhere - I've visually checked things like the Brake servo Vacuum hose and this seems OK. The Carb was obviously new when I got it but as it'd been sat around for a few years it's had the pump jet/main gasket changed, the only one I've not done is the Choke cover gasket , but I can see enough Air leaking in thru that to be causing this.
PLEASE HELP!!