Cold starting trouble
Discussion
Hi,
My S3c has ALWAYS started perfectly in all conditions. It will fire up first time, set the revs to 1300ish for a short while and then settle at 1000. I never need to touch the throttle. However, last weekend, although it sparked up first time it only ran for a few seconds and then just died. It would turn over fine but not fire, or fire very briefly and die. Same thing just happened this evening, although this time by putting the throttle to the floor a couple of times whilst winding and then employing some hefty 'dabbing' I managed to keep it running, just! Once it had warmed up a little, 3-4 mins, it idled fine and ran fine on a little trip round the block. It is as if whatever should happen in a cold start is just not happening. What would the most likely causes of this be do you think?
Thanks.
My S3c has ALWAYS started perfectly in all conditions. It will fire up first time, set the revs to 1300ish for a short while and then settle at 1000. I never need to touch the throttle. However, last weekend, although it sparked up first time it only ran for a few seconds and then just died. It would turn over fine but not fire, or fire very briefly and die. Same thing just happened this evening, although this time by putting the throttle to the floor a couple of times whilst winding and then employing some hefty 'dabbing' I managed to keep it running, just! Once it had warmed up a little, 3-4 mins, it idled fine and ran fine on a little trip round the block. It is as if whatever should happen in a cold start is just not happening. What would the most likely causes of this be do you think?
Thanks.
It could be the Air Bypass Valve.
It's the cigar-shaped metal thingy bolted to the side of the plenum (sorry no pics).
It allows extra air (and, therefore, fuel) into the system when the engine is cold (works like a choke).
Unplug the electrical connections on the end, unbolt it (don't lose the gasket) and clean out the 20+ years of crud with solvent cleaner or similar.
It's the cigar-shaped metal thingy bolted to the side of the plenum (sorry no pics).
It allows extra air (and, therefore, fuel) into the system when the engine is cold (works like a choke).
Unplug the electrical connections on the end, unbolt it (don't lose the gasket) and clean out the 20+ years of crud with solvent cleaner or similar.
Cold starting is not a problem but warm up is my S was outide overnight & it took 15 mins to warm up to operating temp yesterday!! thats a lot of fuel. & a lot of fog
I have just looked at the search & its down AGAIN I recall a post perhaps last year about diverting the by-pass hose from the thermostat to the bottom hose to speed up the warm up process
can anybody point me to that/those posts.
Also can anybody that did it confirm that it works, is safe in all conditions etc. etc
Ian
I have just looked at the search & its down AGAIN I recall a post perhaps last year about diverting the by-pass hose from the thermostat to the bottom hose to speed up the warm up process
can anybody point me to that/those posts.
Also can anybody that did it confirm that it works, is safe in all conditions etc. etc
Ian
macL said:
Also can anybody that did it confirm that it works, is safe in all conditions etc. etc
Ian
Twas I that did it, been done for over a year now and runs bang on temperature in all weather. I use the car almost every day so its had a lot testing. Up to temperature on the road in about 5 to 10 minutes this time of the year but get warm air from the heater in about half a mile. The re-route of the bypass follows pretty much the arrangement on the Ford Granada where it is routed through the header tank to the bottom of the rad.Ian
A slight oddity I found was that the car does not get as hot as it used to in summer traffic. I think this is because with the bypass connected to the swirlpot and the stat fully open hot water starts to circulate back into the engine through the bypass.
Rob.
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