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[D]

So I got the Elite LPG'd a few months ago. At that time post LPG it developed a misfire and I was getting a p0300 I think. It was a misfire in cylinder 4. So we changed plugs, and the wells had water in them, plus the coil pack was corroded. Scuttle drain was blocked so that was unblocked with the hope it would clear the issue. All fine and dandy till a heavy shower recently and the problem has reappeared. Misfires and EML comes on LPG particularly when booting it. No other issues I can see at present. Pedal trick reveals the same error code as before.

Coil pack is new. I suspect water is getting into the wells again. Any ideas as to how? Where do you think it is leaking water from? Please help! I am going to get someone to look at the plugs again, but would appreciate some thoughts before we take it all apart.

[twiglet]

Water will be leaking in through the scuttle.  Very common problem.  Use a hosepipe on the windscreen with the bonnet open to recreate the problem, and see the path the water takes. 

[D]

Are there any common areas that are affected? I remember reading about the wiper arms or something like that. Will try your suggestion twiglet.

[twiglet]

Water usually finds its way through the join between the 2 scuttle sections, and drips straight onto the NS coilpack.

[feeutfo]

Remove scuttle, spread sealant along the metal cut out(directly above coil pac plug in bank 2) to the scuttle drain polen filter and re fit, after double checking the windscreen seal is still firmly seated correctly.

Then once fitted, seal the hole around the pas side wiper spindle (directly above coil PAC plug on bank 1)

Once dry, or to test prior to,  test with watering can/hose pipe to see where any leaks are.

Hth

[D]

Now where is that man who has a picture for everything? 

[Murph]

Remember the bit I pointed out the other day, where the two plastic parts join? THERE!
Under there is a metal section, get some sealant on there then refit the plastics.  I would recommend getting some more of thos little clips that are missing too - they can only be pennies from a dealer and will stop the scuttle shifting about and letting water in.

[Toddy]

Just a thought, I had an LPG conversion performed previously and kept having similar issues, I am not stating this is your issue, but mine was down to ignition leads breaking down, I replaced them and had the same issue, so went back to the dealer that fitted the LPG kit and he advised that the leads should be of a higher standard than normal on an LPG conversion. I amy be talking out of my backside, but when a very expensive set of leads were fitted the problem never arose again.

[Brikhead]

I am not stating this is your issue, but mine was down to ignition leads breaking down...

Nice thought but the later v6's (2.6/3.2) don't have plug leads, the coil pack is connected directly to the plugs.

[Lazydocker]

Just a thought, I had an LPG conversion performed previously and kept having similar issues, I am not stating this is your issue, but mine was down to ignition leads breaking down, I replaced them and had the same issue, so went back to the dealer that fitted the LPG kit and he advised that the leads should be of a higher standard than normal on an LPG conversion. I amy be talking out of my backside, but when a very expensive set of leads were fitted the problem never arose again.

Shouldn't really be needed if the system is in good condition, but that does eliminate the chance of fitting cheap after market ones

But, as said, the later cars don't have leads