Question about Chevrolet Cars & Trucks

3 Answers

How do I know if the timing chain has stretched or needs replacing on my 1997 Chev PU with 5.7l engine? Mechanic suggests it does. Timing seems to be off when engine is hot.

It has over 500.00km.

Posted by on


3 Answers

  • Level 1:

    An expert who has achieved level 1.


    Visited the website for 3 consecutive days.


    An expert that has over 10 points.

    Welcome Back:

    Visited the website for 2 consecutive days.

  • Contributor
  • 8 Answers

I don't know much about Chevy truck engines but I do know that even back in 70's when I first started working on cars there was usually a way to slightly advance the valve timing in order to compensate for timing chain stretch over time (at least, on overhead cam engines). Of course, eventually you still needed to replace the chain and tensioners. But up until the point that its rattling around inside there you probably wont notice much difference in engine performance. In any case, I can't believe that there is no way to adjust your valve timing to compensate for a little stretch in the chain. Of course, to do so might also be almost as much work as changing the chain itself.

By the way, valve timing does NOT change on a day to day basis, from the engine being hot or anything else (well the chain will get a bit longer as it heats up but not enough to make much difference). That is unless you have some new fancy sports car with variable valve timing. Ignition timing is constantly changing on the other hand, but then again, ignition timing has absolutely nothing to do with the timing chain.

Posted on Dec 03, 2016

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Chevrolet Master
  • 2,598 Answers

A timing chain is hard to check while fitted, most have a tensioner to adjust for ware , They run in oil and last a long time, if there is no noise I doubt it needs changing.

Posted on Dec 03, 2016

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has answered 20 or more questions within one hour.


    An expert who has answered 20 questions.

  • Expert
  • 110 Answers

Do you trust your mechanic? If you do, there's your answer, no?
If you don't trust your mechanic, and trust in your ability and some knowledge of mechanics to do internet searches to find reliable, trustworthy information, there's your answer, no?
The question you pose is quite specific, i.e., might not best be solved without knowing dead-on accurately about your car.

Posted on Dec 03, 2016

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have 99 chev pu 4.3 just put new head gaskets on .now I can not get the timing cam retard off -22.whats wrong.everything was set at top dead center.dist lines up on mark 6 inside it. Help

the book shows chev 4.3 L is a v6 chain driven and the valve timing is correct when the two dots line up with each other
if it is the ignition timing that you are talking about you are probably 180 degrees out in the distributor setting
no 1 piston firing lines the rotor button up at no one HT lead and not no 6
all engines regardless are timed of no piston tdc and chev engines are around the 12 degrees btdc for operation

Feb 26, 2016 | Cars & Trucks

2 Answers

I have a 2002 Nissan Altima 2.5L. When i drive more than 11 miles, it sound like the timing chain is rattlling inside the engine. But if i stop and shut the car off for like ten minutes then the rattl

There is, in fact, a timing chain on your car. Unfortunately, the Altimas around this year have issues with stretched chains. This car probably should not be driven. If the chain breaks, you will destroy your valves and need to get your head rebuilt. The parts for this repair can be had for under 100 dollars, however, the labor involved is quite a lot. I was quoted $1000.00 for the job and thought it was too much until I got into it. Very time consuming and not for a beginner mechanic. If you know someone who is a VERY good mechanic, maybe they can give you a break on the labor.

Nov 01, 2014 | 2002 Nissan Altima

3 Answers

Diagram of timing chain

I need to know what year Grand Am and engine size?

Aug 27, 2014 | Pontiac Grand Am Cars & Trucks

1 Answer

My 1193 Mercedes 300 has almost 200, 000 km. Never driven in winter. Last year the engine started sounding like a diesel engine. The noise has slowly progressed and presently it is defnitely notceable. One...

Both mechanics mentioned the problem in the same general area, the timing chain rotates the cam shaft that opens and closes the values. I don't know much about your car but assuming it is a 1993 with a lot of miles my guess is that it has a metal timing chain, if so then it could be time to replace it. Metal timing chains (just about all types of timing chains for that matter) stretch and wear over time. I've seen metal chains stretched an inch with less than a 100,000 miles. However, if you are going to do that much work, it you think that might be the problem, then probably it would be worth doing a complete head job. I'm afraid without a lot of expensive diagnostic work auto repair can sometimes be a guessing game. Or find some real expert who has seen all the problems for your type of car.

Aug 03, 2014 | 1993 Mercedes-Benz 190

1 Answer

Does 1997 pontiac sunfire gt 2.4 L set it's own timing

No, The 2.4lt quad 4 has a timing CHAIN when it starts to get sloppy the chain must be replaced. As these engines have an internal ignition pack under the valve cover ther is no adjustment. Unless you are an acomplished mechanic I don't suggest you takle this on your own.

Oct 16, 2011 | 1997 Pontiac Sunfire

1 Answer

When does the timing belt have to be changed on a 1997 Saturn SL? What are the symptoms of needing to change the timing belt? My car has about 94,000 miles on it and I'm the original owner. Thanks!

the 91-98 saturns all had the same engine block, one of the many good features of saturns. Main difference is which head is on the block. They have a timing CHAIN and somewhere around 100,000 would be good. I had one go on a DOHC at 145k and the symptom was a very loud whirring coming through the dash, I got to it just prior to failure. Obviously the valve timing is sloppy with a stretched chain and many bad things can happen when your crank is turning but not the camshaft. Conversely I replaced the chain on a SOHC at 170k and it had little stretch. While you are in there, do the water pump, the chain guides/tensioner and the oil pump is at the bottom.

Jul 09, 2011 | 1997 Saturn SL

1 Answer

How do I replace a timing chain in an 1997 chevy caviller

Hi there,

Generally, in "chain" driven engines, it is not neccessary to change the timing chain unless it is seriously stretched or broken (only timing/cam "belts" require interval changing).

However, if you are experiencing the symptom of chain "rattle", then I would first reccommend you change to the correct grade of engine oil, then secondly, change the chain "tensioner".

Jun 07, 2011 | 1997 Chevrolet Cavalier

2 Answers

At what mileage does the timing chain need to be replaced? jeep wrangler 2008,3.8 L 6 cil.80,000 miles

You change the timing chain now when your Jeep has indicated from a check engine light on. The timing chain in engines these days last as long as the engine will, there is a timing chain tensioner to ensure there is no slack.
When the timing chain has gotten stretched to much, your Jeeps PCM will indicate that with a check engine light on your dash and will be indicated with a DTC codes from a scanner.
So no worries about replacing your timing chain and keep up the regular maintenance, if you have a Mechanic tell you other wise, there just looking for money and your looking for more then just a timing chain being replaced.
You can bet that chain, chain tensioner, timing gears, water pump and might even throw in a cam replacement will be in his recommendation.
Thank you for using fixya and be safe.

Jun 29, 2010 | 2008 Jeep Wrangler

3 Answers

Timing belt on 2003 nissan pathfinder

timing belts and chains are 2 very diff things, belts are rubber and wear out in about 80,000, chains are well chains and made of very strong steel they will last the life of the engine in most cars and trucks but not all cases. there is no recommended change mileage by any manufacturer, if the engine is torn down for an overhaul then yes it is wise to replace the chain, but only then, otherwise it is a very expensive waste of money.

Apr 09, 2009 | 1997 Nissan Pathfinder

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

32 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

77932 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides