1991 Loud Knocking

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Dec 8, 2007 | 05:31 PM

#21

4howard

Thread Starter

Instructor

Joined: Oct 2007

Posts: 201

Likes: 1

From: NY

Fuel Injectors - found four bad. Changed all eight. Runs like a champ!!

Thank you.

Dec 8, 2007 | 09:45 PM

#22

Dads90

Burning Brakes

Joined: Oct 2004

Posts: 898

Likes: 1

From: Pearland Texas

thanks for the follow up.. It feels good to resolve an issue. Glad you got it fixed.

Dec 9, 2007 | 07:55 AM

#23

larryfs

Safety Car

Joined: May 2002

Posts: 4,010

Likes: 26

From: Somewhere nowhere

what kind of injectors did you install ?

Dec 9, 2007 | 10:27 AM

#24

Sam Lam

Melting Slicks

Joined: Apr 2002

Posts: 2,118

Likes: 0

From: St. Charles, MO Route 66 Corvette Club

Should have read page two of thread.......my error!!!

Last edited by Sam Lam; Dec 9, 2007 at 10:29 AM.

Dec 9, 2007 | 09:36 PM

#25

RandyJ75

Safety Car

Joined: Jan 2006

Posts: 3,566

Likes: 4

From: Mt Laurel NJ

St. Jude Donor '06-'07

Quote:

Originally Posted by 4howard

Fuel Injectors - found four bad. Changed all eight. Runs like a champ!!

Thank you.

My car made the same noise when hot, drove me crazy. You got away alot cheaper then me.

Dec 11, 2007 | 06:45 PM

#26

4howard

Thread Starter

Instructor

Joined: Oct 2007

Posts: 201

Likes: 1

From: NY

tek tron

Dec 11, 2007 | 06:54 PM

#27

4howard

Thread Starter

Instructor

Joined: Oct 2007

Posts: 201

Likes: 1

From: NY

Quote:

Originally Posted by RandyJ75

My car made the same noise when hot, drove me crazy. You got away alot cheaper then me.

I have not the time nor the tools to do the repair myself. I called a Corvette specialist and he told me his hourly rate, but had no clue as to what the problem could be. Instead I took the car to my local garage up the block, where the guy works mostly on old Mopars. I brought him a printout of some of the replies I got to my problem, and I told him to check the fuel injectors. He disagreed with the diagnosis and happened to be pretty stubborn about it. I gave him the latitude and he went ahead and "checked" (also known as tried new parts) the TPS, ECM, and several other electronic items. After some amount of time he reluctantly measured the injectors and found four bad. Being as the guy is my local guy up the street, he did not charge me for the 11 hours invested not looking at the injectors. He did find the EGR valve was stuck open though, and he did change that.

Bottom line: ATTABOY to the Corvette Forum and it pays to deal with someone you know and trust.

Thanks again to everyone who helped.

Dec 11, 2007 | 06:55 PM

#28

4howard

Thread Starter

Instructor

Joined: Oct 2007

Posts: 201

Likes: 1

From: NY

Quote:

Originally Posted by RandyJ75

My car made the same noise when hot, drove me crazy. You got away alot cheaper then me.

Quote:

Originally Posted by larryfs

what kind of injectors did you install ?

Not sure of the spelling, TECHTRON or TEKTRON

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Dec 11, 2007 | 07:14 PM

#29

staugur

Drifting

Joined: Apr 2007

Posts: 1,339

Likes: 2

From: port charlotte fl

get a stethoscope or a screwdriver or a wooden dowel and put it on each injector body with the car running. You will hear them ticking as they fire and they should all sound the same.If you have a bad one it will sound different to the others.
Just saw you fixed it-great.I'll leave this post anyway for others.

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