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Jan 24, 2007 14:22:31 GMT
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I'm having some trouble with my 3-door Sierra not starting, which is a pain since it's now my sole transport! It's a 1.6 Pinto with the old black-box-controlled Bosch distributor and a VV carb. Now before I explain any further.... I know that the valve stem seals are knackered so it burns a fair bit of oil on start-up, and the plugs are a little "crusty", despite only having been in there for 1,000 miles.... Anyway, when trying to start it, the car fires immediately, dies, then nothing. It cranks over fairly slowly and sounds like it's having a real job turning over. I thought I'd cured this by changing the carb on Sunday... except this morning the grief's returned. Last week we got it running by sticking neat petrol down the carb, again it was OK for a couple of days... Other parts replaced so far: Plugs Leads Rotor arm Distributor cap Oil and filter Coil ....all of which weren't up to much.... and both carbs have new diaphrams in. Anyone suspect that it's the oil seeping into the cylinders causing the trouble? Any advice gratefully received!  |
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My fleet:
Suzuki GSX-R600Y SRAD with bald, melted tyres
A borrowed Mondeo
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Jan 24, 2007 15:19:49 GMT
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 Does it sound like it's struggling to turn over the first time you turn the key?
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Jan 24, 2007 15:25:22 GMT
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No..... It's turns over OK to start with, then slows right down.
However on days when it runs, it turns over nice and quickly regardless (being an 80s Ford, hot starting usually takes five seconds of cranking!)
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My fleet:
Suzuki GSX-R600Y SRAD with bald, melted tyres
A borrowed Mondeo
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Jan 24, 2007 15:29:26 GMT
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It does sound like oil is being sucked down the guides when you 1st turn it over. When it eventually runs I suspect you're getting blue exhaust smoke? Does it use lot's of oil?
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Jan 24, 2007 15:39:37 GMT
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When it eventually runs I suspect you're getting blue exhaust smoke? Does it use lot's of oil? Yes! It certainly has had a MAJOR appetite for 20/50 and puffs plenty of blue smoke when it starts. I expected the plugs to physically look oily if that was the problem, which they didn't, but they were a bit crusty with brown / black deposits on. Compression's good - it's a low-ish miler and there's probably all that oil in the bores too!   ;D |
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My fleet:
Suzuki GSX-R600Y SRAD with bald, melted tyres
A borrowed Mondeo
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madmart
Part of things
love is: valvebounce in top gear
Posts: 559
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my marina does the same thing ive just knocked the timing back a bit and it seems better
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Aha..... now I know that the timing has been messed about with on mine - the distributor marks don't line up, which I guessed was probably someone's "unleaded conversion"! Thinking about it there's a fair amount of pinking when accelerating up hills too. I'll be purchasing a satin black / pinstriped mk1 Fiesta in the next day or two, think I'll get the head off the Sierra and take the opportunity to sort it all out properly in one foul swoop. Cheers guys! |
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My fleet:
Suzuki GSX-R600Y SRAD with bald, melted tyres
A borrowed Mondeo
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Maybe it's upset that it hasn't been turned into a Cossie-rep like all it's brothers?  |
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mercmad
Posted a lot
Flush Hard,it's a long way to McDonalds.
Posts: 1,740
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Jan 25, 2007 10:40:14 GMT
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I would start by getting the battery load tested,it sounds suss to me.
Then check the earth connections from ther battery to the body ,and from the engine to body.A car won't start if the starting circuit is sick.
If you can a load test done on the starter get that down too.
A sluggish starter drags a lot from a battery and is easly fixed so don't put up with niggling problem .
Once you have eliminated the battery ,it's connections and the starter from the problem.put the timing mark on number 1 top dead center.Take the cap off and ensure the rotor is pointing at the little mark on the distributor body.
OK? then check the resistor is clean and it's connections are tight.
From here we need to check the cam timing is OK,does it have original drive? It might be in need of a change .A worn timing belt will throw the timing out by miles losing power and making the engine hard to start.
Leaking valve guides only cause smoke at start up and when coasting and normally don't affet compression enough to cause hard starting.
Replace the plugs with a set two times hotter.
Start the engine and set the timing correctly.
If you can., Post a pic of your plugs so we can read them and see if the carb is indeed playing a part of your hard start problem.
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Many years ago I changed my driving style to cope with rising fuel prices; I have now reached the stage where I am contemplating keeping my eyes shut in order to lower wind resistance.
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Does it sound like it's struggling to turn over the first time you turn the key?
;D
