You are here:

Chevrolet Repair/exhaust manifold gasket

Advertisement


Question
I need to replace both exhaust manifold gaskets on my 99 Chevy Express 3500 cutaway cab with a 5.7L V8...Could you give me a brief how-to?...I'm fairly mechanically inclined, but have never before worked on this vehicle...Someone mentioned that i might have to use an engine hoist to hold the weight of the motor and remove the engine mounts to give enough clearance to remove the exhaust manifolds, is this true?...also, is there any other components that might need to be removed like the alternator, radiator, etc?...thank you very much!

Answer
HI ALLAN, SOMETIMES IT IS EASIER TO GET AT SOME OF THESE BOLTS THROUGH THE WHEEL WELL AREA. YOU CAN ALSO GET AT MOST OF THEM FROM THE ENG BAY AREA..YOU SHOULD NOT HAVE TO REMOVE ANY BRACKETS THAT IAM AWARE OFF. BUT BEFORE YOU ASSUME THAT THE GASKETS ARE BAD,WHICH MAY OR MAY NOT BE, BECASUE SOME OF THESE ENGINE DO NOT HAVE ANY GASKETS WHERE THEY ARE BOLTED TO THE HEAD..SOMETIMES THE MANIFOLD BOLTS GET LOOSE OR WILL BREAK OFF IN THE MANIFOLD..BUT ONCE THE MANIFOLD IS REMOVED YOU SHOUD BE ABLE TO GET A VICE GRIP ON THE OTHER HALF OF THE BROKEN BOLT AND REMOVE IT THIS WAY. ALSO SOMETIMES THESE MANIFOLDS WILL CRACK,SO MAKE SURE THAT THIS IS NOT CRACKED BEFORE YOU THINK A GASKET WILL WORK. TO CK,, GET A RUBBER HOSE SUCH AS A HEATER HOSE 5/8 IN DIAM AND ABOUT 2 TO 3 FEET LONG. PUT ONE END UP TO YOUR EAR AND THE OTHER END BY WHERE YOU THINK THE LEAK IS AND YOU WILL BE ABLE TO ZERO IN ON THE LEAK REAL FAST LIKE THIS..
I HOPE THIS HELPS YOU AND GOOD LUCK,,,TOM..

Chevrolet Repair

All Answers


Answers by Expert:


Ask Experts

Volunteer


TOM SHEETS

Expertise

PLEASE READ ALL OF THIS BEFORE ASKING ANY QUESTIONS. IF THIS CHEVY SECTION IS MAXED OUT.YOU CAN REACH ME IN THE OLDS/BUICK SECTION. Will answer questions from 6:00am to 10:00pm all days [EST][[[ NO DIESEL OR PAINT QUESTIONS]]] will answer all 1965 to present QUESTIONS ON ALL GM'S on mechanics of these cars. Keep in mind i am not there in person i am going on what you are telling me !! PLEASE IF ASKING A QUESTION GIVE ME AS MUCH INFO AS POSSIBLE. THE MORE THE BETTER. SUCH AS YEAR,MAKE,MODEL,ENGINE SIZE. THIS WILL HELP ME HELP YOU. I will not be able to answer all questions because of some situations that i would really need to be there and see things for myself,such as electrical issues. In many cases i would need wiring diagrams. I can also give you an estimate on what the cost would be at our repair shop as an idea to help you. Keep in mind that my answer is ONLY MY ADVICE,ck with your mechanic as well.. >> THANK YOU, TOM..

Experience

I have been a ASE certified master mechanic for over 30 years and certified IN ALL 8 CATEGORIES,[engine repair,engine performance,auto trans,manual trans,clutches,steering and suspension,brakes,electrical systems,heating and air/cond. I am also a state CERTIFIED inspector for over 30 years. I do computer work [pcm]fault codes,pcm flashing,state inspection monitor readiness,repairs on exhaust,fuel service,[injection and carburetor,] charging system problems, running issues,alignments,frame problems,tire balance,struts and of course standard and anti-lock brakes.

Organizations
nys state auto repair industry and ase group.

Publications
N/A

Education/Credentials
high school,4 years of tech school,and many many hours of auto training with many gm classes and aftermarket training classes..

Awards and Honors
ASE MASTER TECH CERTIFIED IN ALL 8 CATEGORIES.NYS INSP LICENSE AND A/C CERTIFIED

Past/Present Clients
MANY CUSTOMERS IN OUR BUSY SHOP.

©2016 About.com. All rights reserved.