anhonyb Posted April 3, 2010 Share Posted April 3, 2010 I put my vauxhall vivas engine back in today everything went fine, finally got to the stage to fire it and it just wont start. It does even almost start just keeps turning over there is a good spark at all the plugs and theres gas going into the carb but im pretty sure its not making it to the engine I took the carb apart and cleaned it all up but the gas still wont go into engine so i don't know whats wrong ideas? thanks Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted April 3, 2010 Share Posted April 3, 2010 mass vac leak in manifold? like brake booster line. try tipping a few ml of pety dwn carb while turning over, if it dnt fire then the issue will be to do with timing ect Quote Link to comment Share on other sites More sharing options...
anhonyb Posted April 3, 2010 Author Share Posted April 3, 2010 mmm i did pour petrol down the carb, it resulted in a fire, unfortunately the fire was on the carb/air filter as i was a bit liberal with the petrol lol Quote Link to comment Share on other sites More sharing options...
shizzl Posted April 3, 2010 Share Posted April 3, 2010 timing out 180 then? cos if it caught fire at the carb it sounds like a backfire through the intake...which makes me want to say the timing is out 180 Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted April 3, 2010 Share Posted April 3, 2010 timing out 180 then? cos if it caught fire at the carb it sounds like a backfire through the intake...which makes me want to say the timing is out 180 qft Quote Link to comment Share on other sites More sharing options...
Hemi Posted April 3, 2010 Share Posted April 3, 2010 timing out 180 then? cos if it caught fire at the carb it sounds like a backfire through the intake...which makes me want to say the timing is out 180 qft wft. i did this and 3 foot flames came out the carby Quote Link to comment Share on other sites More sharing options...
anhonyb Posted April 3, 2010 Author Share Posted April 3, 2010 i only changed sump gasket everything else was the same as when i took it out and it was running then. the only other thing i changed was the inlet manifold because the other one had a leak Quote Link to comment Share on other sites More sharing options...
forced Posted April 3, 2010 Share Posted April 3, 2010 A mate of mine had a Galant that did that. The motor had been cooked and it wouldn't fire due to not enough compression. So if it's got fuel and spark, you haven't touched the timing....give it a compression test. Was the gasket leaking because there was too much pressure in the sump? That's a common cause. You could have flooded it though, plugs will be wet with fuel. Steve Quote Link to comment Share on other sites More sharing options...
shizzl Posted April 3, 2010 Share Posted April 3, 2010 timing out 180 then? cos if it caught fire at the carb it sounds like a backfire through the intake...which makes me want to say the timing is out 180 qft what is qft? i assumed the engine had work done to it as he said he put it back in..and was at the stage to fire it up... has everything been hooked up correctly? Quote Link to comment Share on other sites More sharing options...
anhonyb Posted April 4, 2010 Author Share Posted April 4, 2010 yes everything been hooked up algood and also plugs aren't getting wet with fuel. Its going into carb then just not making it to engine Quote Link to comment Share on other sites More sharing options...
Yowzer Posted April 4, 2010 Share Posted April 4, 2010 Blocked jets? Quote Link to comment Share on other sites More sharing options...
EFI_LC Posted April 4, 2010 Share Posted April 4, 2010 i figured this would have been fixed by now... I reckon timing is out My sure fire method is turn engine over til timing mark is about 10-15 degrees before lining up. Check to see if rockers oer rocking and if yes then turn over another revolution Check points and they should be just opening for number 1, tighten and fire up other than that another common problem if its points is to large a gap, close it slightly, if not points no probs. Quote Link to comment Share on other sites More sharing options...
anhonyb Posted April 4, 2010 Author Share Posted April 4, 2010 ok a bit of pregress, it now backfires out the carb most times Quote Link to comment Share on other sites More sharing options...
shizzl Posted April 4, 2010 Share Posted April 4, 2010 loose valve adjusters? ive had a car that had a valve adjuster come off, did a similar thing to ours, but it does sound more like timing....was your dizzy tight or undone at all? also check earthing and throttle butterfly operation Quote Link to comment Share on other sites More sharing options...
anhonyb Posted April 4, 2010 Author Share Posted April 4, 2010 dizzy was left as is, throttle butterfly works Quote Link to comment Share on other sites More sharing options...
EFI_LC Posted April 4, 2010 Share Posted April 4, 2010 dizzy was left as is, throttle butterfly works so the dizzy wasn't taken out? The only other time I have had backfires was if the motor was terribly lean but if you put a cap full of petrol down the carb it shouldn't backfire if the time is right. the accelerator pump fuel when? you took carb apart, did you have a spare ballbearing left? Quote Link to comment Share on other sites More sharing options...
Yowzer Posted April 4, 2010 Share Posted April 4, 2010 What happens when ya blast engine start / brakleen / carb clean down the carbie while cranking? Fires up and runs till ya stop spraying? Or just goes bang / pop / backfire Pump the carb, do ya see a spray / mist in it? Any fuel in the float bowl? Yeah. Try stuff and see what happens. Quote Link to comment Share on other sites More sharing options...
anhonyb Posted April 4, 2010 Author Share Posted April 4, 2010 ok now it doesnt backfire, its so close to firing. its trying to but not holding it, gas mixture to lean? Quote Link to comment Share on other sites More sharing options...
EFI_LC Posted April 4, 2010 Share Posted April 4, 2010 ok now it doesnt backfire, its so close to firing. its trying to but not holding it, gas mixture to lean? Maybe a loose or bad earth, spark but not strong enough? fuel filter round the correct way? Quote Link to comment Share on other sites More sharing options...
anhonyb Posted April 4, 2010 Author Share Posted April 4, 2010 somethings fucked up in the carb im sure. Iv got 4 shitty spare ones that dont work also, im going to make one with all the best parts and see what happens Quote Link to comment Share on other sites More sharing options...
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