5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
I have a 1990 525I touring wagon. According to the owners manual, the spark plug gap is not in there for the 525i, the gap for the 535i and m5, but not the 525i. Can anyone give me insight, or a gap i can use? the book has the 535i at 0.7mm + 0.1mm or 0.028+0.04in
and the M5 at 0.6mm+0.1 or 0.24+0.04in
the book has the recommended plugs to use for all three cars. I have the plugs, but I need to know what to gap them at.
The motor is a straight 6 if that helps any.
Thanks in Advance
Hmmm...I don't know how comfy I would be putting "Autolite" plugs in my BMW. I know my local O'Reilly auto parts caries the NGK's. They run just under 10 bucks a piece and are pre-gapped. The NGK's have (4) ground electrodes per plug. The Autolite's only have (1) per plug. If you have not put them in yet, I would really advise getting the NGK's (OEM) The increase in fuel economy and engine performance is worth the extra 12 bucks. I gained 4 mpg just changing out my old NGK's to new ones. I have yet to see a fouled plug in a BMW when the OEM's were used. I have replaced countless numbers of aftermarket and USA branded plugs that were fouled, and causing poor performance/decreased fuel economy. JMHO and years of owning and repairing late model BMW's.
thanks for the info, i think i will take these back and go to o riellys to get the ngk or see if they have the bosch. the bosch that are in there look pretty good, but i just got this car in dec and it has over 220k, im tryin to get more mpg and power. thanks again
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