Idling rough

Tiny
ASEMASTER6371
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Make sure you do a running compression test. If it is low, it could be a broken valve spring.

Roy
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Wednesday, November 10th, 2021 AT 5:17 AM
Tiny
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Can someone please read my last message and help me?
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Friday, November 12th, 2021 AT 7:35 PM
Tiny
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I did read your response and gave you my suggestion for number 2 misfire.

The extended crank indicates a possible fuel delivery issue. Did you verify the fuel pressure?

Roy
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Saturday, November 13th, 2021 AT 7:44 AM
Tiny
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I did a static compression test Friday, and all cylinders were 150. Number cylinder had 125 approximately 1 week ago. Friday, I did again they were all 150. How could that be? Monday I am going to do a running compression test. What should I be looking for? Also going to do an air test on two cylinder to see if any intake or exhaust leaks.
Here's what the current status is: long crank, fires up, blue smoke funny smelling exhaust and rough idle. I had a mobile mechanic come out to help diagnose. The only thing he was able to do with his $8,000.00/lol Snap-On scanner was turn the fuel injectors off one by one to see if a change in RPMs, each one did have a change in the way it ran. He said the fuel injectors are all good. I am a disabled veteran who desperately needs his car to run. Can someone please recommend an automotive technician who can troubleshoot my car in or around Berkeley Calif. I tried the dealership in Concord and that really was a clown show. I have put a lot of money into my Nissan Maxima all new shocks/struts both driver and passenger side cv axles hubs bearings rotors/brake pads ball joints tie rod ends bushings and ball joints, rear hubs and bearings, new tires, new valve covers spark plugs ignition coils, VVT timing control solenoids, camshaft position sensors. I need help!
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Sunday, November 14th, 2021 AT 4:10 AM
Tiny
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Okay, as I stated in my previous responses if the running compression is low, it indicates a possible broken valve spring. It can have good static compression but bad running compression.

Did you verify the fuel pressure?

Roy
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Sunday, November 14th, 2021 AT 4:30 AM

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