clh92
Part of things
Posts: 73 
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Feb 14, 2021 12:15:36 GMT
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1600 cvh in a mk2 fiesta...
Can come to it one day, and it'll fire first time and start everytime there after, and run and drive spot on
Other days... it'll just turn over and over, not had the car long and not currently using it but would like to track down the issue, most parts are new or recent looking, all wiring is visually ok, just fit a new ign module (it was physically damaged)
Anyone any ideas ?, or anything common on the cvh's that makes them a pig to start ?
Cheers
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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Temperamental CVHslater
@slater
Club Retro Rides Member 78
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Feb 14, 2021 12:25:11 GMT
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What Carb has it got? Is it auto choke? I forget what the CVHs had one them. The ford VV carbs are notoriously curse word. Auto chokes can play up too.
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clh92
Part of things
Posts: 73
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Feb 14, 2021 12:40:47 GMT
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Weber tldm with autochoke, which appears to be working as it should
Has brand new mech fuel pump, to replace the badly fitted electric facet
Haven't gone to far into it, but must be missing something simple, hoping someone has had a similar issue
Cheers
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Feb 14, 2021 12:50:51 GMT
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Has it got the condenser box on the dizzy? They're renowned to be a weak spot.
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Feb 14, 2021 14:52:35 GMT
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Check the pcv circuit the valves used to stick open and they would never start, as a trial you can blank the manifold off and leave the camcover vent pipe open
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clh92
Part of things
Posts: 73
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Feb 14, 2021 20:27:24 GMT
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Has it got the condenser box on the dizzy? They're renowned to be a weak spot. The ignition module ?, black thing with 3 pins ?, if so... thats brand new |
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clh92
Part of things
Posts: 73
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Feb 14, 2021 20:29:04 GMT
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Check the pcv circuit the valves used to stick open and they would never start, as a trial you can blank the manifold off and leave the camcover vent pipe open Will have a look at that next time I'm with the car, be nice if it was something like that, thanks alot |
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Feb 15, 2021 23:30:09 GMT
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Check for oil escaping past the distributor housing seal into dizzy assembly too
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clh92
Part of things
Posts: 73
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Apr 17, 2021 11:35:45 GMT
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Checked all these things this morning, and still the same... anyone any other ideas ?
Cheers
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Apr 17, 2021 14:38:28 GMT
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The ignition module ?, black thing with 3 pins ?, if so... thats brand new Hi, Just because it's new, it doesn't mean it can't fail. Colin |
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Apr 18, 2021 19:07:33 GMT
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probably fuel returning back to the tank, fit a none return valve in the fuel line just before the pump
can test this quite easy, pinch the flexy fuel line in the same place with a hose clamp tool, undo it just before starting the car next time and see if that sorts it, if it does, then buy a none return valve.
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cjhillman
Posted a lot
1979 Capri (Rolling Project) 1985 Escort mk3 (Daily)
Posts: 1,580
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Apr 19, 2021 16:16:27 GMT
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I just went through this with my Capri and it was the accelerator pump valve fitted wrong. Wasn’t firing any juice into the carb. Also I have an Escort mk3 ohv and that sometimes does this. Changed earths, battery and points (yours won’t have them I don tbink) it’s better but suffers from the cold weather badly .
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Apr 21, 2021 13:42:00 GMT
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Have you looked at the plugs when it won't start? Is there a spark? Are the plugs wet?
Try a squirt of start ya curse word down the throat of the carb next time. If it catches momentarily, you have no fuel.
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Jaguar S-Type 3.0 SE
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