Duramax mechanics

[kawidude]

Anyone know any good places that have worked on the d-max s I got a 2003 it's starting to tick or know almost reall loud when cold little better when warm always here it at idle you don't really notice it just driving down road wonder if valves need adjusted or something any help be great

[TheWanderer]

I don't know anyone that drives a Duramax...

Seriously though, it's probably a bad injector(s). Valves RARELY come out of adjustment on Dmax's.

Get a balance rate check first. If you're in the city, stop by, I'll do it for you for a slurpee, preferably orange, not the large, the one size one size bigger than the small one.

If you're not in the city, I know two good rural Dmax guys in the westman area...

[four_420_twenty]

thats service. ill trade you slurpees lol

[Fastwilly]

I will almost guarantee it is the injectors. I would say to call Walter Thicket in Binscarth, he is one of the best diesel guy in your area. If he can't help right away then maybe Don Turnbull can.

[MudChucker]

Originally Posted by TheWanderer

I don't know anyone that drives a Duramax...

Seriously though, it's probably a bad injector(s). Valves RARELY come out of adjustment on Dmax's.

Get a balance rate check first. If you're in the city, stop by, I'll do it for you for a slurpee, preferably orange, not the large, the one size one size bigger than the small one.

If you're not in the city, I know two good rural Dmax guys in the westman area...

You know its hot in Winnipeg when the locals are doing business in Slurpees. No wonder we are the Slurpee capital of the world !

[kawidude]

Originally Posted by TheWanderer

I don't know anyone that drives a Duramax...

Seriously though, it's probably a bad injector(s). Valves RARELY come out of adjustment on Dmax's.

Get a balance rate check first. If you're in the city, stop by, I'll do it for you for a slurpee, preferably orange, not the large, the one size one size bigger than the small one.

If you're not in the city, I know two good rural Dmax guys in the westman area...

Thanks for the offer but I won't be to the city any time soon I'm going to get the balance rates checked in town willy thanks maybe try them guys see if they can check the rates

[kawidude]

Had the balance rates checked
Said there good?? Think I should do a oil sample see if there's any fuel or anything in it ?

[TheWanderer]

What did they check it with and what were the actual rates?

Next step would be to data log the FPR and see if it spikes at an idle in gear.

Do you run additives? If so, what brand?

It's also possible that it requires a valve adjustment. How many miles are on it?

It's also possible it's totally normal as per a GM bulletin:

Here is the TSB--INFORMATION

Bulletin No.: 02-06-01-022H

Date: August 18 2008
Subject:
Information on Engine Ticking Noise

Models:
2001-2007 Chevrolet Silverado (Classic)
2003-2009 Chevrolet Kodiak C4500/C5500 Series
2006-2009 Chevrolet Express
2001-2007 GMC Sierra (Classic)
2003-2009 GMC TopKick C4500/C5500 Series
2006-2009 GMC Savana

with 6.6L Duramax(TM) Diesel Engine (VINs D, 1, 2 - RPOs LBZ, LB7, LLY)

Supercede:

This bulletin is being revised to add model years and remove RPO LMM. Please discard Corporate Bulletin Number 02-06-01-022G (Section 06 - Engine/Propulsion System).

Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 70°C (158°F) or higher and from idle to approximately 1500 RPM. The noise usually is most noticeable at the rear of the drivers side front wheel well. Customers may also comment about hearing a tick noise inside the vehicle at idle such as when sitting at a drive through window. All 6600 Duramax(TM) diesel engines have this condition; however some are more audible than others. Engine build variation from engine to engine contributes to differences in perceived volume. All Duramax(TM) engines are manufactured to very close tolerances to meet the durability and reliability standards.

This noise is caused by the relationship of the engine cylinder block crankshaft journals bearing inserts and the oil film. This relationship may allow a vibration that resonates through the cylinder block and is heard as a metallic ticking noise. The noise could be described as an irregular ticking or clacking sound like random typing on a mechanical typewriter.

This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when in fact it was masked by other noises in the past. Many manufacturers such as Isuzu Hino Mitsubishi and Nissan report a similar condition in their diesel engines. Testing and engine teardowns with this condition reveal no condition that would affect reliability or durability of this engine.

Dealers should not attempt to compare any customer vehicles exhibiting this noise with other similar vehicles as the noise is different from vehicle to vehicle and this may lead to the incorrect conclusion that the vehicle has a condition. This noise is a normal operating characteristic of the engine. This noise has no short or long term effects on the engine. Do not attempt repairs for this noise.
Important: Replacing the engine or internal components for this noise will not reduce or eliminate the noise.

Bottom line is that it's impossible for anyone to diagnose a noise issue on a message board over the internet. If you don't think it's a normal noise, it's time to take it to someone that knows what they're doing and pay them to fix it.

[TheWanderer]

You're in Birtle aren't you? If so, call Dwayne at 205-585-2493, he's in Sandy Lake, former GM tech...Knows his Dmax's...

[kodiakman91]

you should try calling dwanyne morrow he's in Carmen and knows pretty everything about gm vehicles. if know one else knows whats wrong he'll find out what is.
his # 12047451904
ps he and also tune for power or gas mileage

[Max Power]

Does this tick sound like a typewriter tick? is it worse after oil changes?

[kawidude]

Is this dwayne running a shop there or what thanks

[kawidude]

O ya it's 291,000 Kms

[gkram1985]

I think 2 different Dwayne's

[kodiakman91]

Originally Posted by kawidude

Is this dwayne running a shop there or what thanks

the Dwayne in carmen does this off to the side

[kawidude]

Is there a place in car berry that's good with d-maxs

[05cummins]

Worn stix that still have good rates and function can make more noise a click or a clack.
They might have no mechanical issues at all just the tolerance is loose.

291 km on stock stix is starting to get to that working but worn stage.
Have you tried and are you using a good quality fuel cond.
A 2003 with ulsd fuel can also clack.

Also get a valve set done that can cause what your hearing or a combo of both.

Is it programed? that alone with high rail pressure can make a noise in the fuel system.