Im stumped...please inspire me!

[96Greenster]

He should have magnafluxed both of the heads to make sure there wasn't any cracks. The 4.0 heads like to crack in between the intake and exhaust valves. After making sure they weren't cracked, he should have checked the valve seals. If he didn't test the seals then there's no way he knew whether they were good or not.

Yeah he did magnaflux the heads. So, would I have to buy the upper gasket kit again plus the valve seals for the job?

 

[Toms01PSD]

Did you replace ALL of the gaskets when you put it back together? IE gaskets in between the upper/lower intakes, gasket in between the fuel rail and lower intake, fuel injector o-rings? Stuff like that? If so i'd say just leave those gaskets alone and just replace the head gaskets, valve cover gaskets, and definately valve seals.

The valve seals came in the gasket set I bought. It was like $156 from AutoZone.

 

[96Greenster]

Did you replace ALL of the gaskets when you put it back together? IE gaskets in between the upper/lower intakes, gasket in between the fuel rail and lower intake, fuel injector o-rings? Stuff like that? If so i'd say just leave those gaskets alone and just replace the head gaskets, valve cover gaskets, and definately valve seals.

The valve seals came in the gasket set I bought. It was like $156 from AutoZone.

I really dont know what he replaced. I just took the truck to the mechanic and he did the rest. But i am going to talk to him about this, for sure. Hey Tom, do u know long could I keep driving the truck like this and keep adding oil? I need to leave my bank account alone for a while, if u know what i mean...

 

[Toms01PSD]

I really dont know what he replaced. I just took the truck to the mechanic and he did the rest. But i am going to talk to him about this, for sure. Hey Tom, do u know long could I keep driving the truck like this and keep adding oil? I need to leave my bank account alone for a while, if u know what i mean...

I'm not too sure really. The only reason I can comment on the matter is because i'm in the process of putting my 4.0 back together. I don't take a camera to the shop with me so I haven't taken any pictures. I have access to AllData so I have a step by step process of putting everything back together with torque specs and all...

I know that I personally have cleaned everything I removed to look brand new and replaced each and every gasket or o-ring whether they looked good or not.

Big Jim has been on the money and could probably go more indepth than I. When I bought the truck I trailered it the shop and got to work, I still haven't put tags on it or registered it.

 

[Big Jim M]

Howdy 96 What I'd do if I had an engine that was new to me.. I'd get me another set of heads with TIGHT guides and new seals. I'd clean em up and when I had time I'd take a day and install em myself.

You didn't post having done a compression check. With that damn K&N filter on there that would be one important thing to do right away...just to make sure the compression is good enough to put new heads on.

Big JIm

 

[Mosinman76254]

Was there ever a compression check done on this motor?

 

[96Greenster]

Like i said guys. I dont really know what the mechanic did or didnt do. He gave it back to me running, but it was a mistake taking the truck with out any info. This is the 1st truck ive had to fix the engine, so ill learn from my mistakes. Ill try and go ask him for some info. But my concern right know is if i can keep driving the truck like it is?
I poured a Lucas Oil Stabilizer additive and it did help alot... but im not relaxed knowing that something could happen to the motor. Also, the truck does not smoke at ALL. Ive had somebody started while engine was cold and I starred at the exhaust tip and nothing came out, not even if reved up. Im confused. Thanx in advance!!

 

[96Greenster]

Howdy 96 What I'd do if I had an engine that was new to me.. I'd get me another set of heads with TIGHT guides and new seals. I'd clean em up and when I had time I'd take a day and install em myself.

You didn't post having done a compression check. With that damn K&N filter on there that would be one important thing to do right away...just to make sure the compression is good enough to put new heads on.

Big JIm

Hey Jim, thanx for the reply. Ive heard alot of comotion about these K&N filters. I figure it would be harmfull on dusty/offroad driving, how about highway/city? Would u recommend getting regular filter on my '99?, since I work in the Oil Fields EVERYTHING is dusty the roads/locations. I prolly should right?

 

[Big Jim M]

Right!
BJ

 

[96Greenster]

Right!
BJ

Right on! Ill swap it on the weekend.