Made a vid of my "flywheel noise" , is it the flywheel? --- - ZR-1 Net Registry Forums

alwayscode390 · 05-13-2013

A couple owners ago told the owner before me that he changed the injectors. I have a receipt for the FORD yellow/red injectors and was given 15/16 black / silver stock injectors back ... and ONE spare yellow/red. I keep wondering if they reused a stock one and left out a Ford one?

The car stutters before the secondaries open up if I am not on the throttle atleast 1/3 of the way. I guess I could be having injector issues, but Haibeck mentioned in a post he hasn't seen any issues with the Ford replacement injectors.

The car also starts up in different crank time lengths. I thought it was the weather , but its been warm awhile. Sometimes it literally starts up in 1 second, sometimes it takes 3 seconds. It could be a leaky injector?

The car runs great though , put out a solid few runs on the Dyno with zero issues.

If it was an injector, how would that make the rattle sound from the back of the engine?

If it was a single mass flywheel ... is it easily detected with the car in the air?

I am at the point where I would hate to replace the injectors and spend $1k on parts I don't need ... or same with the clutch/flywheel.

I guess if I replace them I know whats in the car, but I don't exactly have $2k to throw at parts at this moment.

I actually planned to take the car down the 1/4 mile on Wed next week ... should I scratch that idea until I figure out whats going on?

Thanks guys , I know its hard to diagnose through the computer but I don't know anyone local with a ZR-1 to compare the car to , especially not a LPE topend car. I also know my car will have quirks that the stock ZR-1s wont have.

That vid I posted was mainly a test vid to see if I could even hear the issue , I will try and get a better one to post soon!!! ---

05-13-2013	#11
alwayscode390 Join Date: Dec 2012 Location: STL Posts: 492	Re: Made a vid of my "flywheel noise" , is it the flywheel? --- A couple owners ago told the owner before me that he changed the injectors. I have a receipt for the FORD yellow/red injectors and was given 15/16 black / silver stock injectors back ... and ONE spare yellow/red. I keep wondering if they reused a stock one and left out a Ford one? The car stutters before the secondaries open up if I am not on the throttle atleast 1/3 of the way. I guess I could be having injector issues, but Haibeck mentioned in a post he hasn't seen any issues with the Ford replacement injectors. The car also starts up in different crank time lengths. I thought it was the weather , but its been warm awhile. Sometimes it literally starts up in 1 second, sometimes it takes 3 seconds. It could be a leaky injector? The car runs great though , put out a solid few runs on the Dyno with zero issues. If it was an injector, how would that make the rattle sound from the back of the engine? If it was a single mass flywheel ... is it easily detected with the car in the air? I am at the point where I would hate to replace the injectors and spend $1k on parts I don't need ... or same with the clutch/flywheel. I guess if I replace them I know whats in the car, but I don't exactly have $2k to throw at parts at this moment. I actually planned to take the car down the 1/4 mile on Wed next week ... should I scratch that idea until I figure out whats going on? Thanks guys , I know its hard to diagnose through the computer but I don't know anyone local with a ZR-1 to compare the car to , especially not a LPE topend car. I also know my car will have quirks that the stock ZR-1s wont have. That vid I posted was mainly a test vid to see if I could even hear the issue , I will try and get a better one to post soon!!! ---