Question about Chevrolet 3500

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I need to replace the manifold to cyl heads gaskets due to coolant leak on my 1998 454 C3500. I've disconnected everything including electical connectors to injectors & all mounting bolts. Fuel rail is loose but I can't figure out how to remove the rail from the manifold. (injectors are still connected to rail) Manual is no help at all. Do I just tug at it until the injectors come out or is there more to it, please?

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Pull the rails off, may take a little effort to remove because of O rings hold it in place. After you take fuel rales off make shore to replace the O ring's with new ones. lube the new O rings when reinstalling parts good luck CJ

Posted on Aug 03, 2010

Testimonial: "Thank you my friend. You'd think that the factory manual would be a little more helpful. Kind regards"

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2002 Dodge neon Problems with the head leaking?


It leaks what... coolant or exhaust gas?
If it's exhaust gases it's more likely to be the exhaust manifold gasket at fault.

If it's coolant leaking out somewhere it could be a hose/radiator/coolant tank, though coolant can also leak from the head gasket area.

A classic sign of a leaking head gasket is a creamy white/grey sludge on your oil dipstick. This is caused by coolant finding its way via a blown head gasket into the oil system

2002-dodge-neon-problems-head-leaking-drn4r4jcf5cpqfgonvky3zim-5-0.jpeg A creamy sludge on the dipstick - caused by coolant finding its way into the oil system because of a leaking head gasket.

Other indications of a leaking head gasket/head is overheating and rough running.

You can also try removing the cap from the coolant bottle and letting the engine idle. If bubbles continually appear this may be due to the exhaust gases finding their way into the cooling system via a leaking head gasket.

In most cases replacing a head gasket requires the cylinder head to be skimmed as well. This is because the alloy of the head tends to warp slightly.

A workshop would be able to diagnose a faulty head gasket within minutes. Having a head gasket replaced and the head skimmed isn't a cheap job.

Nowadays there are 'guaranteed head repair' additives available. Just follow the instructions on the can if you decide to use one. I personally haven't used such an additive.


2002-dodge-neon-problems-head-leaking-drn4r4jcf5cpqfgonvky3zim-5-1.png

Nov 06, 2015 | 2002 Dodge Neon

1 Answer

White smoke from 6.5 turbo diesel. already replaced both heads and gaskets


All that work should have fixed the problem, but unfortunately white smoke means coolant, need look for a leak in a head gasket.

Nov 24, 2013 | 1993 GMC Sierra C3500

1 Answer

Upper Engine Seal


3.4 engines are notorious for bad intake manifold gaskets.
if you are going that deep into the engine it is not much more
work to change the head gaskets at the same time, make sure you also replace the head bolts.

Nov 03, 2012 | 2002 Pontiac Grand Prix

1 Answer

Anti freeze is leaking out of first cylinder tube of spark plug bay and car over heated


Do you mean coolant is entering #1 cyl and when you removed spark plug,cranked eng, coolant came out? If that's the case cyl. head gasket/cracked head is the problem. Also you will need to determine what caused the failure,ie: radiator cooling fan inop, thermostat, low coolant level due to leak,or mileage.

Sep 03, 2011 | 1996 Nissan Sentra

1 Answer

My 97 z28 is overheating I want to know a few possible causes for it to do that


Most common overheats are caused by low coolant due to a leak somewhere in the cooling system. Second to that is a bad thermostat, obstructed radiator (internally or externally). A cooling fan that is not working can do that too. Less frequently, you can develop cooling system leaks inside the engine...cylinder head gaskets or intake manifold gaskets will do that.Even less frequently that that is a crack in a cylinder head. Overheating problems can "snowball" due to continued driving. A bad thermostat can be an original cause but can lead to multiple failures if you continue driving and overheating. Same applies to all I've listed as "common" causes. Check everything over carefully and if you have a specific question about anything you find, just ask!!!

Jun 10, 2011 | 1997 Chevrolet Camaro

1 Answer

I replaced intake manifold gasket on5.7 engine.Water started leaking when I filled resivoir.Why?


Assuming that the leak was coming from the gasket that you just replaced, it could be due to several factors which include the following:

1) uneven mating condition, between intake and head due to non removal of the old gasket
2) gasket could have shifted out of position while the intake was being put in place
3) over torquing or un-even mating condition could have caused a crack in the composite intake manifold
4) under torqued intake to head attachments.

There are also quick disconnects for the heater hoses which may not be properly retained. These quick disconnects have been known to crack, creating a leak,

I would first determine where the liquid is coming from and then concentrate on that interface to solve the issue.

Jun 05, 2011 | 1999 Cadillac Escalade

2 Answers

I just changed the thermostat on 3.4 L 1999 Pontiac Gr Am GT THINKING IT WOULD FIX THE OVER HEATING. But there is white steam coming out the exhaust! The oil is not milky so it's not a head gasket. There's...


Are you adding coolant?
Yes ......means it's going somewhere.
Fill the coolant tank to the top...right to the top....leave the cap off and run the engine.
If you see bubbles you need a head gasket.
The intake gasket is another source of coolant leaks and at this area the coolant can be sucked into the engine and produce a white smoke.
Does the car run rough at the first start in the morning....could be antifreeze burning off in the cylinder or area that was leaking overnight meaning cyl gasket or intake gasket.
Look at the rear head to block area below the exhaust manifold.
Is there any trace of coolant or stains of coolant......yes means head gasket time.
Pressurizing each cyl at a time with air with the valves closed in that cyl will quickly show the location of the bad head gasket with bubbles coming out of the fill tank on the bad cyl (s).
Head gasket leaks don't always mean milky oil.

Aug 12, 2009 | 1999 Pontiac Grand Am GT

1 Answer

My 1997 acura 3.5rl has been giving out white smoke from exhaust pipe for almost a yr now. when i first reported here someone suggested it could be due to a leaking gasket or broken head gasket or block....


it does sound like a head gasket allowing coolant into the cylinders and burning which creates the white smoke. a head gasket is a large job which requires you pull the cylinder head from the top of the engine. auto parts stores sell head gasket kits. you would also need the propper torque specs for the head as well as the sequence for tightening the head bolts.
before you go about replacing or having the head gasket replaced have you been losing coolant. is there any oil in your coolant or coolant in your oil your engine oil will look milky.

as i'm not familiar with an acura is the enginge a v-6 if it is it could also be the intake leaking as most v-6 engines cycle coolant through the intake manifold and can send coolant ito the cylinders if it is leaking.

Mar 07, 2009 | 1997 Acura RL

1 Answer

Coolant leaking on manifold, steaming.No hose or radiator leak.


i think its going to be the head gasket duto the way its leaking coolant. one of the water jackets maybe i would have it checked to be sure but it sounds like head gasket

Feb 03, 2009 | 1991 Toyota 4Runner

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