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Dec 19, 2015 14:00:04 GMT
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Guys have a new project/daily. now I changed the timing belt (as it snapped but fear not nothing was bent/damaged only happened due to a long lay up and being on the original 22,000 mile 20 year old belt! ) , and my first thing running through my head is either air leak( done the usual carb cleaner around the carb not making much improvement) , or have I got it a tooth out on the belt? would a tooth out cause the car to not want to idle? as it only idles with the choke out. will re time it but just wanted to ask on here just incase theres anything else that I should be looking for? thanks in advance  Gav |
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taurus
Posted a lot
Posts: 1,084
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Dec 19, 2015 14:45:20 GMT
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If the timing is out you can get that happening. There's plenty of other possibilities of course but since you've done the belt I'd double check the timing before starting with anything else.
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p1erce
Part of things
Posts: 50 
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Dec 19, 2015 14:50:44 GMT
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double check the timing first....
After that, if its running a tldm, whip out the idle valve solenoid and make sure the valve/jet is not blocked.
The electrical connector is push on, so pull that off, I think the solenoid itself is 13mm, whip it out, pull off the valve, don't lose the spring, give it a clean / blow through, clean the "thread" on the connector and put it all back together.
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Last Edit: Dec 19, 2015 14:51:55 GMT by p1erce
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ChasR
RR Helper
motivation
Posts: 10,197
Club RR Member Number: 170
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cvh running only on choke?ChasR
@chasr
Club Retro Rides Member 170
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Dec 19, 2015 19:15:57 GMT
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Is it misfiring throughout the rev range or not?
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Dec 19, 2015 21:35:07 GMT
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Not a tdlm carb but a weber 32ibf (1300 cvh) and already done that to it made no difference . I will double check the belt , undo tensioner re set to tdc again and rope my dad in to help. Its mad it does it everytime wothout fail soon as a put the choke back in 5 seconds after battery light on and cuts out. Re starts fine again with choke to repeat same procedure. Thanks guys will update as and when  |
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can I bump this quickly. basically before I zetec it I'm having thoughts on solving this cvh.. I know mad. Anyway, is it possible that it has bent a valve? as it wont idle at all without choke! soon as its put in 5 seconds or so it cuts out. will obviously do a compression test tomorrow.. would a bent valve cause it to not idle at all?! tried adjusting the carb made literally no difference what so ever :/ .
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steveg
Posted a lot
Posts: 1,565
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Is it a richer mixture or higher idle it needs to keep running ?
It sounds a bit like a blocked jet. Another possibility I though of was that the accelerator pump jet might be split letting air in where it shouldn't, or even one of the hoses to the carb.
If it runs OK with the choke on and the belt is fitted looking at the carb is a good place to start especially as it's been sat for a while.
I've had cars that will only run on choke when carb jets have frozen up in bad weather. Hopefully it isn't anything serious, might be worth a compression check to make sure though.
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Is it a richer mixture or higher idle it needs to keep running ? It sounds a bit like a blocked jet. Another possibility I though of was that the accelerator pump jet might be split letting air in where it shouldn't, or even one of the hoses to the carb. If it runs OK with the choke on and the belt is fitted looking at the carb is a good place to start especially as it's been sat for a while. I've had cars that will only run on choke when carb jets have frozen up in bad weather. Hopefully it isn't anything serious, might be worth a compression check to make sure though. Its just a higher idle to keep it running. I will have to check the jets then, just thought i may give it one last good check over its got to be something stupid!? Thanks |
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ChasR
RR Helper
motivation
Posts: 10,197
Club RR Member Number: 170
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cvh running only on choke?ChasR
@chasr
Club Retro Rides Member 170
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IME a lack of compression can affect idle quality on a carbed car. AFAIK the CVH is an inteference engine so I would be surprised if you have not bent a valve TBH! I would do a compression test before going further. However, depending on the car I don't think the CVH is a tricky car to swap the head on TBH!
Which CVH engine is it?
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Last Edit: Jan 4, 2016 0:28:19 GMT by ChasR
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IME a lack of compression can affect idle quality on a carbed car. AFAIK the CVH is an inteference engine so I would be surprised if you have not bent a valve TBH! I would do a compression test before going further. However, depending on the car I don't think the CVH is a tricky car to swap the head on TBH! Which CVH engine is it? My thoughts exactly. My dad said the same straight away before i bought it but i tried my luck! It is an nippy little 1300 cvh on a weber 32ibf carb. Is it worth the money and work.. Hmm |
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