NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   3rd Generation Specific (https://www.nopistons.com/3rd-generation-specific-18/)
-   -   Blown Motor? (https://www.nopistons.com/3rd-generation-specific-18/blown-motor-24556/)

papasmurf 09-12-2003 01:16 AM

ok first off i just got my car boosting again for the first time day in a month, so im worried.. my car is running non seq and has a manual boost controller set low (eventhough i peaked at 14psi) everytime i just let off boost at any range, i heard a LOUD woosh almost like im spinning my tires really fast, but im not....



also i stopp and noticed my idle is now irratic (even more than before) and my boost guage doesnt show good vacuum. i usually see 10-12 vac at idle, now it is close to zero and jumps with the idle from 0 to 5 vac...



my friend was holding the pfc commander and saw almost no knock (1/4 to half at MOST only one time).... what is it? did i blow my turbos or motor this time? my car is wayy too hot right now to try n touch ANYTHING right now...



oh yeah, and NO SMOKE... that i or my friend saw..

jspecracer7 09-12-2003 01:28 AM

You might have possibly blown a intercooler pipe. Check the map sensor also?

papasmurf 09-12-2003 01:49 AM

nope, both are fine.. i blow those damm ic pipes ALL the time, and ive screwed the map sensor up before (vac hose problem etc ) and this isnt like ANY of them... also my car is QUIETER!

andynogo 09-12-2003 03:20 AM

Possibly something in the exhaust system or housing has collapsed causing huge backpressure in the exhaust side of the motor???


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