Symptoms of a blown engine..

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Oct 31, 2002 | 02:04 PM

TBoost

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Joined: Jul 2001

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From: Woodland Hills, CA

Symptoms of a blown engine..

All:

I believe I blew my motor last night as the vaccum is reading -10psi at idle and the idle is loping. If I take it past 2000rpms the car just dies. This happened from racing it past redline and hearing the car backfire as a result of the ignition cut. All indications point to a bad motor, except one. There is no smoke coming from the exhaust.

Any comments? Maybe a vaccum line came off?

-M

Oct 31, 2002 | 02:16 PM

GLHS

Shelby Tuner & FC badass

Joined: Apr 2002

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From: Seminole, Florida

You just blew your new engine?

I would check to see if everything is on nice and tight and nothing is missing.

Doing high RPM runs tends to disconnect my fuel injection harness. Thats why I have the engine chained down and using comp mounts!

Oct 31, 2002 | 02:23 PM

j9fd3s

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From: https://www2.mazda.com/en/100th/

1. low vacuum reading at idle
2. rough idle
3. if its really bad, no power

mike

Oct 31, 2002 | 02:38 PM

Snrub

Eats, Sleeps, Dreams Rotary

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From: London, Ontario, Canada

Mine still has no smoke after 600+kms (400 miles) of driving. I've been mean to it too.

Test the compression, it's the only way I know of being 100% sure. (people who know have other ways too) At first it made the proper sounds when the plugs were removed, but now it sounds bad. I can take it to redline.