niggel Posted September 19, 2013 Share Posted September 19, 2013 got a miss in my bmw e21, runs mint when half throttle but soon as you full throttle it splutters and misses and wont speed up. Thinking its a fuel issue, has brand new fuel filter. Its got a solex 4 barrel carb. Any help? Quote Link to comment Share on other sites More sharing options...
JoKer Posted September 19, 2013 Share Posted September 19, 2013 I was gunna say fuel pump but then read the carb bit.... : air leaks? Quote Link to comment Share on other sites More sharing options...
Rookie Posted September 19, 2013 Share Posted September 19, 2013 Sounds like ignition to me. 1 Quote Link to comment Share on other sites More sharing options...
Spencer Posted September 19, 2013 Share Posted September 19, 2013 Yea thats what I would be looking at, need more info. Quote Link to comment Share on other sites More sharing options...
yetchh Posted September 19, 2013 Share Posted September 19, 2013 Either that or accel pump.. Quote Link to comment Share on other sites More sharing options...
Berjjj Posted September 19, 2013 Share Posted September 19, 2013 Solex 4a1? I have the same carb and they can be absolute dogs if not clean and leak free. Worth a going over in any case. Then start to look at ignition. Edit: also on an e21 Quote Link to comment Share on other sites More sharing options...
Burntrubber Posted September 20, 2013 Share Posted September 20, 2013 Sounds like ignition to me also have had same issues in several cars my Gemini did it when I increased boost from 12 to 18psi was the plugs boschs under 1000ks changed to ngks and fixed it. Latest was my wrx plugs been little hard to get at I didn't check them first they were smoked car started idled drove fine unless I floored it new plugs fixed it. My escort years ago was points same syptoms. And lastly my wife's laser was the ignition module. Quote Link to comment Share on other sites More sharing options...
niggel Posted September 24, 2013 Author Share Posted September 24, 2013 Fine at half throttle but now when you hold it foot flat its starts letting of back fires and blew the muffler open Quote Link to comment Share on other sites More sharing options...
KKtrips Posted September 24, 2013 Share Posted September 24, 2013 Sounds like you need to give it a proper tune up. Not just a tickle but a full check over and tune. None of this set and forget stuff like modern cars. They need the ignition and fuel systems fettled about every 6 to 12 months to keep on top of them. If you aren't familiar with points and condenser style tuning then best to take it to someone who is. Quote Link to comment Share on other sites More sharing options...
pusherman Posted September 28, 2013 Share Posted September 28, 2013 drop the points in favor of electronic dizzy and giggle like a hairy arsed school girl? Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted October 3, 2013 Share Posted October 3, 2013 if they are side draft carbies check to make sure that the main jet holders havnt screwed them selfs out ,that will make it break down as well Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.