tregath Posted January 10, 2012 Share Posted January 10, 2012 A few months ago I was given a VW engined beast that is not too far away from being on the road (which is when the thread with pictures will be put up). Its a 1300 aircooled. I have just pulled the carb apart for a good clean as it was leaking (still is, any one got hookups for carb kits?) and now it is running barely but has a very different symptom. It seems to be running on all 4 but the exhaust manifold on the left does not get hot, while the right gets to normal temprature. everything seems to be firing correctly and they are all sparking. this has me stumped. its not running at low revs and when running at half throttle sounds like its running normally apart from a hole in the exhaust. Any one have any ideas? oh yea its also missing one wheel Quote Link to comment Share on other sites More sharing options...
governorsam Posted January 10, 2012 Share Posted January 10, 2012 firing order? Quote Link to comment Share on other sites More sharing options...
Borgweiser Posted January 10, 2012 Share Posted January 10, 2012 Definitely not running on four, a VW motor should idle no matter how low the revs/almost unstallable. Sounds like one side is pushing the other etc. Quote Link to comment Share on other sites More sharing options...
tregath Posted January 10, 2012 Author Share Posted January 10, 2012 Firing order is correct, what do you mean by one side is pushing the other? Quote Link to comment Share on other sites More sharing options...
KKtrips Posted January 10, 2012 Share Posted January 10, 2012 Yeah I agree with these guys that the firing order doesn't sound right try swapping the HT leads front to rear on the cold side.. To me it sounds like you have read the dizzy rotation the wrong way and have mistakenly traced 2 of the leads.. Easy mistake and I've made it myself. Quote Link to comment Share on other sites More sharing options...
BlownCorona Posted January 11, 2012 Share Posted January 11, 2012 yeap, firing order or not firing at all. either way fuel is not being ignited, thus no heat. have you seen the spark? these engines will idle extreeeeemmly low if everything is good Quote Link to comment Share on other sites More sharing options...
DavidTheCreator Posted January 11, 2012 Share Posted January 11, 2012 To me it sounds like you have read the dizzy rotation the wrong way and have mistakenly traced 2 of the leads.. Easy mistake and I've made it myself. same here. Quote Link to comment Share on other sites More sharing options...
KKtrips Posted January 11, 2012 Share Posted January 11, 2012 Did this help find the problem at all? Quote Link to comment Share on other sites More sharing options...
LingLing Posted January 11, 2012 Share Posted January 11, 2012 yeh, the golf mk2 I tested today stalls all the time at cold, but when's warm, it idels at around 200-400 rpm i was very stoked. Quote Link to comment Share on other sites More sharing options...
Simon Posted January 11, 2012 Share Posted January 11, 2012 yeh, the golf mk2 I tested today stalls all the time at cold, but when's warm, it idels at around 200-400 rpm i was very stoked. Completely different motor lingling, one is water cooled the other is air cooled and has no radiator. I know that the problem with the mk2 is the idle control valve on top of the motor. If you take it off and clean it out with brake clean it will run fine for a month or two. Unsure to the actual motor in question though lol Quote Link to comment Share on other sites More sharing options...
tregath Posted January 12, 2012 Author Share Posted January 12, 2012 motor in question is 1300 aircooled. the firing order and timing is correct as per the haynes manual I got with the thing (only has 3 wheels so its a thing). Would it indicate replacing dizzy cap? Quote Link to comment Share on other sites More sharing options...
Borgweiser Posted January 12, 2012 Share Posted January 12, 2012 probably plugs, stuffed leads? check points, coil? could have stuck valves do compression check before going any further Quote Link to comment Share on other sites More sharing options...
KKtrips Posted January 12, 2012 Share Posted January 12, 2012 I doubt replacing the dizzy cap would fix the symptoms you describe. What did it do when you switched the leads front to rear on the cold side? Quote Link to comment Share on other sites More sharing options...
tregath Posted January 12, 2012 Author Share Posted January 12, 2012 back fired, the only thing borg has suggested I have not tried is the valves, i will Have a look at them tomorrow as I have the day off work. Quote Link to comment Share on other sites More sharing options...
DavidTheCreator Posted January 12, 2012 Share Posted January 12, 2012 where are u located treg? Quote Link to comment Share on other sites More sharing options...
QCADTA Posted January 12, 2012 Share Posted January 12, 2012 Are the plugs wet? otherwise look for an air leak, check the rubber joins between the carb and the head to see if its split/leaking? Quote Link to comment Share on other sites More sharing options...
10Speed Posted January 12, 2012 Share Posted January 12, 2012 personally I just want to see a pic of this 3 wheel vw powered thing(/trike?) Quote Link to comment Share on other sites More sharing options...
Sisu Posted January 12, 2012 Share Posted January 12, 2012 Check the valves when cold. Unless the valves are properly seated then they don't allow the heat to go into the head. Firing order is 1-4-3-2. Left hand side far cylinder (if you are looking at the engine from the back) is number 3. The one under the oil cooler. Unless you have a doghouse fanshroud, so called because it is out of the airflow of the fanshroud. This cylinder is the weakest in the engine. There could be a deeper problem with your cylinder head or burnt valve. But this is the easiest to check. To start to off on the right direction here are the vintage training videos complete with bacon frying in the background. EpH7VftH3_I xm4OmiVH2J0 XOxxS1EMphU Quote Link to comment Share on other sites More sharing options...
DavidTheCreator Posted January 12, 2012 Share Posted January 12, 2012 Are the plugs wet? otherwise look for an air leak, check the rubber joins between the carb and the head to see if its split/leaking? IMO, if its an air leak it will be that one of the pipes going to the intake ports is loose at the head or just not sealing at the head. check the bolts that hold the intake manifold on are tight. Quote Link to comment Share on other sites More sharing options...
DavidTheCreator Posted January 12, 2012 Share Posted January 12, 2012 ah thats what you ment, my bad. Quote Link to comment Share on other sites More sharing options...
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