Re: Cross theaded spark plug

the best way to go about this is to put the piston the best you can at top dead centre then remove the plug. try your best to take it out without breaking it. If it does snap you have lost nothing as the head would have to come off anyway. if it doesn't, check the threads for damage, if you can salvage them with a plug thread tap filled with grease to catch the shavings, then use a elbowed scribe tool with grease on the end of it to collect any shavings that fell in the cylinder, hence it being at TDC. if threads are beyond repair and a heli coil kit is needed do the same thing again with the tap when cutting the new thread and scribe tool. warning here when putting in a helicoil if they go in wrong the only way out again is with the head off. I done this on a z650 4 cylinder motor bike, had a bit more room than on the 730. It maybe wise to remove the head, seeing you have a recon one and swop them over. I have put our website link below and have a forum there too, give us a visit and say hi.

thanks

paul dean
89 730ise auto

Hi,

Just purchased a 1991 730, I have a 1989 530 which I am going to sell.

The 730 is in reasonable condition, and I got the car today and was changing
over many of the newer items fitted on the 530.

3 of the spark plugs have been cross treaded on the 730. Got 2 of them out
but one wont budge. What should I do?

Change the heads over - the 530 has had a recent head overall?

Any tricks for removing the cross treaded spark plug. It's off set by say
10% and not fully screwed in.

Should I leave it till the spark plug fails and then attack the problem then.

I don't want to snap the plug off.

Any ideas please?

Judging by the state of the plugs - they have been in 6 months or so.

Thanks

Brian [UK]

The Uk E32 Register

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