Gas runs like poo off a trowel

Problem solved in a not so scientific manner!

I took the dizzy out, reset the airgap to 0.25mm (was about 0.30mm which is still in spec), cleaned the earth terminal on the amplifier and threw in the old Lucas rotor. It now goes perfectly again on LPG and runs as well as it ever has on ULP. So it would appear that it was one of those three. Since the problem was escalating, I doubt it was the airgap - it was as I set it - and the earth terminal was not that dirty. My money is on the "new" rotor, and there is an easy way to test that. I'll drive it as is for a few days to make sure it was not just behaving itself to mess with my head, and then throw the "new" rotor in.

At least she's running again.

BTW, pulled two random plugs yesterday and they looked fine. Some soot on the insulator, but the electrodes were the right colour. That appearance fits the likely ignition problem to a T.

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Originally posted by MacMan
and threw in the old Lucas rotor. It now goes perfectly My money is on the "new" rotor, and there is an easy way to test that.

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Was the new rotor a genuine item - the aftermarket ones are crap and fail after about 3 months - have had the problem myself and heard it from others. The genuine item is the only way to go for the rotor.

Gazzz

Always be careful pulling the rotor an the V8 dizzie. It can be hard to remove and it's easy to damage internals. Some recommend breaking the rotor to remove it ot prevent danage to the dizzie.

Ron

Rotor was NOT genuine Lucas, and had not even been on for 3 months. Before I blame it officially I have to test the running with the non-genuine part again, but if that's the parts I will be speaking to the British4x4 mob. I did pay $30 odd for it and if it's faulty they should know.

And Ron, I know all about the pitfalls of removing the rotor. I managed to bugger myself and the distributor the first time I removed it. The shaft was bone dry and it was rusted on. The mob servicing it obviously skipped the line where one reads "apply a small amount of engine oil to the distributor shaft".

All good - the beastie goes again, and I have a spare coil and leads now to add to the travelling kit.

Hmm, might go and get me a new rotor / cap and see if i can get mine running properly again. Thanks for the update.

Just got my car into the place i got the gas conversion, the problem apparently was the "safety timer" what ever that is. i will be seeing how this now runs for a while. after seeing what you guys are saying about other area, i will be checking them soon.

FINALLY I got to swap the rotors again to get to the bottom of this. The culprit WAS the non genuine rotor.

I am going to let the suppliers know it was a dud and see how they respond.

Cheers,

Mike

Glad to hear you got to the bottom of the issue. I will be keen to see how the suppliers respond :oops: