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Discussion Starter · #1 ·
Hi all,
I have a 91 NX 2000, great shape, runs great. I noticed a pinging sound when I accelerate only...sound like an exhaust manifold leak or something. Any ideas? Common problem?
 
G

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Discussion Starter · #4 ·
Have you checked your timing? You may be getting detonation? Depending on the grade of gas you use your timing should be set around 15-19 BTDC. Only run 17 or higher if you plan on using 92-93 octane gas.

MarC
 

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You shouldn't get detonation at full throttle because of fuel enrichment. It would be more of a problem at light to medium throttle.
Its still a good idea to check your timing. Its about $35 for a timing light, and trust me, you'll use it often.

Can you try and describe the sound some more. How long has it been happening? Can you rev the car in nuetral and hear it? etc...
 
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