Possible Miss

[atsbmsmith]

I need a little help. My 87 325e seems to have a hesitation or miss when you run the rpms up very high. Once you are running at a normal speed on the highway it seems to pulse. I have replaced every electrical componet from the coil to wires to plugs. It has not made any difference. Nothing shows up from the computer as a problem. Any Ideas?

[e36_m3_Turbo]

Originally posted by atsbmsmith@Sep 16 2003, 08:40 AM
I need a little help. My 87 325e seems to have a hesitation or miss when you run the rpms up very high. Once you are running at a normal speed on the highway it seems to pulse. I have replaced every electrical componet from the coil to wires to plugs. It has not made any difference. Nothing shows up from the computer as a problem. Any Ideas?

what kind of gas u use?

[e36_m3_Turbo]

and welcome

[atsbmsmith]

Mid Grade 89 Octane

[e36_m3_Turbo]

Originally posted by atsbmsmith@Sep 16 2003, 09:56 AM
Mid Grade 89 Octane

i heard something lik this and the problem was there fuel filter was bad and they were usin gas at shell.

[Fox]

yea it sounds perhaps like a fuel filter if its just something like loosing power. If the engine is missing youll know it. It will make sound. Also, since you have an e30 (and most likely unmodded correct?) you can go ahead and save yourself the money and buy 87 octane. These e30s have rediculously low compression pistons and relativly weak ignition timing and dont need high octane gas at all.

[M5_dude]

I have to disagree with the regular gasoline suggestion. Always use premium on BMW's especially when they get older. I notice an engine which behaves and performs better on high octane. But also the shell thing is true don't use shell! I have a nasty idle which causes the engine to shake so bad you can feel the car move. I have not had my engine miss yet though. Another thing dont use synthetic oil...its too thin.

[m42technic]

Originally posted by M5_dude@Oct 13 2003, 05:42 PM
Another thing dont use synthetic oil...its too thin.