Set dizzy up and pointing to no.1 Turn engine over and it fires up but starts to miss fire through csrb Leads are at 1 4 3 2 Any ideas please
Well the firing order is correct. Are you running points or electronic ignition ? If points, are they in good condition and correctly gapped ? Condenser good ? Have you tried strobing it to check the timing ? I think any of these problems can cause poor running. Stirlingmoz
If it’s been stood a while, the fuel could have ‘gone off’ or be contaminated. You may have something as straight forward as a blocked idle jet in the carb or an air leak. The secret is to be methodical. Sounds like you have ruled out ignition problems, so fuel system is next. Stirlingmoz
Timing setup properly please, before accusing the engine of being bad. Electronic points replacements can fail suddenly, if it runs with points then that could be the issue. Backfiring through carb can also be mixture related, too rich , it flooded with electronic ignition, you changed it , it ran for a bit and flooded again with points.. a leaky carburettor fuel valve can make a perfectly working engine mess around. It probably actually runs the same with electronic ignition. If you really have destroyed the engine after 800 miles ( 5 weeks driving for my bus), it must have been setup really badly by whoever did it.. mind you I have seen the output from a T2D installation effort and it was bad with a huge air leak, making it run lean and rough. Check compression to see if the valves are really a cause.
If you’ve changed the electronic ignition module and fitted points without moving your dissy it will be 90 degrees out. as others have said you need to set the timing
misfire through the carb, spitting out the top, could be your ignition leads are out of order. 1 4 3 2 in clockwise order looking down on the top of the dizzy cap. What's the story about the dizzy? When it fires up does it actually run or just spitting out the carb? Did you change the dizzy and why?
Thanks for all the replies and advice Points set correctly Timing is right Dizzy in correct It was flooded like a knob I tested the pump but silly me put the pipe into the throttle Chamber thus flooding the engine
Check for Vacuum leaks. These cause backfires up the carb too. You may hear a hissing sound or just spray carb cleaner on every gasket and hose. Also Vacuum leaks cause the exhaust to pop when the engine is hot.
Brain picking time part 2 please Tried to start the engine today and it starts then after a few reves it starts to back fire Any clues please
Part 2 started engine this morning starts and runs then back fires Immediately So off with carb then whoops no gasket betwen carb and and manifold I wonder if that's the problem
It will pop and bang if there is a massive air leak due to the lack of gasket. Stick one on and try it. If it’s no better then likely a timing issue as snotty says.
Morning each Part 3 of dont wants start VW Battery fully charged Turn key and it turns over but stops dead Try again same thing happens Engine wont do more than one revolution It's a halfords battery 510cca 62 ah 12v With 12.93 volts showing on mtr Any clues please