NA8 Pre Ignition

mazdatenfive · Postby **mazdatenfive** » Fri Apr 01, 2011 10:37 am

When I put my foot down I get a rattling sound from the engine, sounds like pre ignition.
I have run it on unleaded and premium (Shell), still no change.
I have tried adjusting the timing, still no change.

Any ideas?

rob323 · Postby **rob323** » Fri Apr 01, 2011 12:24 pm

Air leak after the air flow meter?
Insufficient fuel pressure?
What's the base timing set at (with the pins connected in the diagnostics box)?
Are you using the correct timing mark on the crank pulley?

manga_blue · Postby **manga_blue** » Fri Apr 01, 2011 2:57 pm

When it was stock my NA8 absolutely refused to run on Shell V-Power. It would ping and miss for 200km then stop dead with hard little black nodules all over the spark plugs.

lukearama · Postby **lukearama** » Fri Apr 01, 2011 3:18 pm

manga_blue wrote:When it was stock my NA8 absolutely refused to run on Shell V-Power. It would ping and miss for 200km then stop dead with hard little black nodules all over the spark plugs.

What is with that???? Did you get an explaination???

mazdatenfive · Postby **mazdatenfive** » Fri Apr 01, 2011 4:38 pm

rob323 wrote:Air leak after the air flow meter? All looks good.
Insufficient fuel pressure? This needs special equipment, haven't checked.
What's the base timing set at (with the pins connected in the diagnostics box)? Yes, done by the book.
Are you using the correct timing mark on the crank pulley? This could be a problem, there seems to be two nicks on the crank. One to the right of a painted white line.

Gee, I wonder where the oil leak is.