Reply With Quotepreignition/detonation
Major Contributor
Spark Plug problem
Well, its been almost a month now since my e34 died on the highway...finally got my friend to help me isolate the problem and come to find the electrode from the spark plug broke off and pretty much destroyed a piston...
what could cause the electrode to just break like that?
Green Beret Special Ops
preignition/detonation
95 E34 530I V2.37
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Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy
Grand Master
or a really old really cheap plug at sustained high RPMs, but detonation is a much more likely scenario.
were the other plugs in bad shape? fouled?
Alusil, Dinan DME | ITG Air Filter | Eibach/Bilstein HD | 26/20 Swaybars | Iridium plugs | Depo/ProLumen HID | Optima batt. | no AC | Stoptech brake lines, Frozen rotors, brass bushings, Superblue
I had the same problem with Platinum Plus 4s fortunately no piston damage.Originally Posted by BillionPa
JNMIP
'93 E34 525i A/T 9/92
Bosch suck I hate them I use NGK on everything even if I cant get the Iridiums or platnium I would rather use the G-powers than Bosch.. Allthough I usaually just order them in advance.. I the like the Laser Platnium or standerd Iridiums. The iridiums dont have to be gapped...
Major Contributor
the rest looked fine but im cautious to use them again...there are bosch too...
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