Hi guy's on road testing my van on the weekend i notice a flat spot when you accelerate at a stand still i didn't notice it driving, but i was wondering if there was a basic setting that would get me home it is a 76 with a 1.6 engine ? many thank's Dan
This is quite common with 34 pict 3 carbs and 009 dizzys and sometimes with SVDA dizzys. This can sometimes be fixed by setting the accelerator pump to maximum. When did you last have the engine tuned and valve gaps set?
i don't know any thing about the vehicle as i haven't collected it yet i just noticed it when i road tested it aparantly it has had a new carb and dizzy this is the only pic i have of the engine hope this help's?
Yup, you have a 34 pict 3 carb and a SVDA dizzy so you shouldn't need to adjust the accelerator pump. Can you describe the flat spot?
When you blip the throttle it hesitate's really bad and nearly cut's out apparently he had it adjusted by someone and is a little bit better as before it stalled when you blipped it?
As per HorsT, check that the accelerator pump is putting a good squirt of petrol into the venturi when you press the pedal. There are other things as well: Check the float level is correct and the needle valve is not worn. Check that the butterfly spindle is not worn (you can feel play if it is). If you find any of the above are not right, it is likely that there is general wear on the carb, so get it overhauled or buy and fit an overhaul kit.
Check for air leaks around the hoses and throttle shafts. squirt a bit of WD and see of the engine changes note. Check for blocked jets. Here's a page of stuff most off which is overkill but you never know... http://www.vw-resource.com/stumbling.html Cheers s
Just a thought - un-hook the vacuum tube from the side of the carb, take off the dizzy cap and suck on the tube to see if the advance mechanism moves. This will confirm if it is working or whether the internal diaphragm has perished - it would account for 'stumbling' when you first put your foot down which is when you are relying on vacuum advance rather than centrifugal advance.
if its a new carb then that is probably your problem along with the new dizzy ,its all chineese rubbish ,find a genuine solex and genuine bosch dizzy
Sorry my mistake its not 180 degrees but mine is turned round more and my timing is spot on, your timing might be out, also noticed you've got points so i'd check them as well
