Once again no start
Discussion
Sorry itsme again, no start an ongoing thing, pump primes, new plugs nd leads and relays for priming pump, but does not fire at all initially did attempt to try firing but only coughed , could it be the coil, or what else, all fuses seem ok,
At my wits end,
Any help would be so much more than appreciated,,,
Kenny
At my wits end,
Any help would be so much more than appreciated,,,
Kenny
Could be all sorts of things (not very helpful I know) but you could try unplugging the Air Flow Meter just to eliminate it, if you do this the engine will run rich but it will run. If it works then you'll need to replace it, all of course on the assumption that you still have one fitted!!!
Could it be as simple as just flooded?
These cars don't require any throttle to kick into life.
My solution. Pull relays, crank over full throttle to clear, insert relays and start no throttle.
If still no starting, try the throttle wide open and give it a long crank. Always works for me with a flooded engine.
Of course it could be something else. Hard to say at a distance.
These cars don't require any throttle to kick into life.
My solution. Pull relays, crank over full throttle to clear, insert relays and start no throttle.
If still no starting, try the throttle wide open and give it a long crank. Always works for me with a flooded engine.
Of course it could be something else. Hard to say at a distance.
Hi peter, thanks but done all already=, fully understand the flooding thing, as with all older cars, had a mechanic up looking but as much use as a chocolate ash tray lol, initially thought as I had run dry a while ago was the filter but put a new one on and the old one was clean, wits end doh,,,
Having cranked the engine, take a plug out. Does it smell of petrol?
If not you've got a fuelling problem. If it does, then reattach it to the plug lead and hold the plug against the engine block and crank the engine over and look for a spark.
If there's no spark you've got an ignition problem
If not you've got a fuelling problem. If it does, then reattach it to the plug lead and hold the plug against the engine block and crank the engine over and look for a spark.
If there's no spark you've got an ignition problem
So you have fuel? Have you taken a plug out immediately after a failed start to see if it is wet? Is there a smell of petrol?
So you have spark? Have you taken a plug out, earthed it on the rocker cover and watched while someone cranks the engine?
Check the king lead from coil to distributor is firmly in place at both ends, and check the distributor points have a gap and aren't a mess.
As you say, it cannot be the 80 amp fuse as you have more happening than if that had gone. And if it ran recently it cannot be daft things like timing hopelessly out. I cannot see while typing, but have you replaced the coil and the ignition amplifier?
I am out of ideas without seeing the car, and IIRC you are in the land of kilt, haggis, rain and the wee dram?
So you have spark? Have you taken a plug out, earthed it on the rocker cover and watched while someone cranks the engine?
Check the king lead from coil to distributor is firmly in place at both ends, and check the distributor points have a gap and aren't a mess.
As you say, it cannot be the 80 amp fuse as you have more happening than if that had gone. And if it ran recently it cannot be daft things like timing hopelessly out. I cannot see while typing, but have you replaced the coil and the ignition amplifier?
I am out of ideas without seeing the car, and IIRC you are in the land of kilt, haggis, rain and the wee dram?
If its new plugs, then wet flooded plugs cant be the issue. The fact that it coughs says you are getting some sort of spark and fuel, but not much more. Just to be 100% sure, you have not touched the dizzy position or got the plug leads swapped about when you changed the plugs? If you drop just one plug out and lay it on the engine (away from the plug hole) then crank the engine and get someone to check you have a bright blue spark every couple of engine revolutions. This is a basic HT test. Just be careful as with a fuel injected engine as if the fuel is being injected as it should be, the vapour gets expelled through the now vacant plug hole and can ignite if its any where near and arcing plug. Not dangerous as such, but the resulting bang can be a bit off putting!
If you can hear the fuel pump prime as you turn on the ignition chances are that fuel will get to the engine (unless the run command to the pump from the ECU is not happening. I understand that the run command is generated from the ignition module so if that is faulty probably no spark and no fuel. Ignition modules are inexpensive I always keep a spare in the boot with many other bits and pieces.
The pump primes on ignition on, but then requires a pulse from the amp to get it to run again. Ive done a bit about it here:
http://www.g33.co.uk/ignition_system.htm
http://www.g33.co.uk/ignition_system.htm
blitzracing said:
The pump primes on ignition on, but then requires a pulse from the amp to get it to run again. Ive done a bit about it here:
http://www.g33.co.uk/ignition_system.htm
But if I've got constant 12v to the pump when the car is cranking but not firing that would rule out the ignition amp wouldn't it? (Sorry to highjack) http://www.g33.co.uk/ignition_system.htm
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