I have had trouble starting my car for a few weeks. It happened suddenly. The car would start eventually after turning the ignition but it would then blow black smoke out of the back.
I suspected the heater plugs. I changed these for new ones. Problem still existed. I then changed the air filter and the fuel filter. Still the same problem. I have put injector cleaner in the fuel and its still the same problem.
What I noticed tonight whilst messing is when I turn the ignition and let the heater plugs go out and then repeat this 3 times, it will start ok. Almost as if the plugs arent reaching temperature. I tried looking for some timer on the plugs but couldnt find it.
What controls the plugs and where?
I located a relay by the fusebox (footwell) and tested this. It closed when 12v is put across the contacts.
Thanks
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Forgot to mention, car has 175,000 miles and is 1994 (M) reg.
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When you say you changed the glow plugs, did you use aftermarket parts?
Might not have applied to a Vauxhall, but I can remember reading in at least one other thread here that aftermarket plugs have given people problems.
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They have NGK on the packet. M10 : 15-20N.m - 7880 - Y-710J
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Had one of these about 4 years ago (mine was a K-reg, 187,000m though!) Mine always used to take an age for the light to go out (20-30sec) but then fired up nicely. I can't be of much help as to whether the plugs are timed or switched off when they reach a given temperature, i would suspect a combination of the two as even with a hot engine they were working for quite a few seconds. It sounds more like the power's not all getting to the 'plugs rather than a problem with the 'plugs themselves, maybe you could borrow some from a known good engine to compare?
The glowplug warning light comes on on my Skoda for a couple of seconds to let you know the bulb is OK, doesn't use the 'plugs when ambient temperature is above +4C :-)
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The glow plugs are very expensive on these Isuzu engined models, from a dealer they are in the region on £40 each! Starting problems on the cars is attributed to either faulty glow plugs or incorrect valve clearances. as the plugs are new, check the valve clearances and I reckon your problem will be solved.
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I paid £40 for 4 glowplugs. Car started fine this afternoon after heating plugs 3 times in a row and then starting car.
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how do i check this. can you give me some more info on this please. any help will be great.
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Steve
Listen to sprice. Tight tappets are by far the most common cause of bad cold starting on these engines. Checking them takes just a few minutes.
Never seen one yet that wasn't too tight.
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