i dont like the sounds of this if it was mine i would tear it completly apart and go through it all very througly
I thought it was headgaskets
- Thread starter 02dirtymax
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i dont like the sounds of this if it was mine i would tear it completly apart and go through it all very througly
before you go to the machine shop I would check the block deck and the heads for warpage. (but i dont trust anybody) since you didnt notice anything leaking you may not need any machine work done.
just so you know check the head in an X pattern and max warpage is 0.0039 in
just so you know check the head in an X pattern and max warpage is 0.0039 in
Another thing you may want to try is replacing the pressure cap on the coolant reservoir. I had coolant weeping out the drain hole on the water pump. Naturally I replaced the water pump, problem didn't go away. So I had noticed the coolant lines were sucking flat once the engined had cooled down. I went and bought a new cap and voila, problem solved. I guess the cap wasn't venting properly causing the system to pressurize forcing coolant around the water pump seal.
My coolant was dirty/oily and had tiny bubbles coming up into the reservoir. I also had a small amount of coolant in my oil -couldn't tell by the naked eye but I had an oil analysis done by Blackstone. The truck ran good for the 14K that I have owned it so I don't think there are any major problems. I didn't see any soot trails anywhere on the injector cup that popped out or on the head. I only got pressurized coolant while towing and putting it under heavy load so I think I had a very minor leak that would be hard to see. I haven't really towed much with the truck so it is hard to say if it was always pressurizing coolant or if it just started. The first time I noticed I had a problem was when i was pulling a trailer for about 4 hours one day and got the low coolant light. I noticed it came out the overflow and my upper rad hose was hard, then I watched it for a few weeks and decided that I had an injector cup or head gasket issue. My wife is dropping the heads off at the shop this morning, I don't have a good straight edge to check for warpage myself. I need to make a few calls this morning to see if I can find those parts that I am missing so the truck can go back together this weekend.
I appreciate any advice I can get Curtis. Should the injector cups have red loctite on them from the factory or is that just something that is done when they are resealed? I didn't see any type of sealant on any of the cups or in the heads where they slide into.
I am pretty sure they come sealed from the factory, but I could be mistaken. I resealed mine with loctite press fit retaining compound for extra insurance.I don't have its number off hand. I will post it up when I get back to the shop.
x2 your not the only one
If its the cups you just saved your self a bunch of money. If not the only the youve wasted is time and possibly a fuel injector install kit. If you were using coolant I would think more HG's but since its pressurizing and you dont have much done to the truck makes me lean to the cups.
Id say go this way too IF,,, he didn't already have one of the heads off.
That said, I usually do start by pulling the injectors to check for loose cups.
Check the oil cooler really close. We had oily coolant and it got worse when he towed. the cooler o'rings were leaking and it got low on coolant and hurt the head gasket. yes its a built motor but these simple things caused alot of headache for me.
That would suck if I go through all of this and find out that it wasn't cups or head gaskets. At least I will have learned a thing or 2, I've never had a motor apart at all except for the ol' lawn mower in shop class. Oil cooler crossed my mind but the tiny bubbles in the expansion tank made me go the direction that I did. I wonder why towing would make an oil cooler leak more? It seems to me that it would be more of a constant problem.
The biggest problem is he was 13+ hours from me when it first acted up, then he got in a race and basically kept it stuck to the floor on and off for about 1 1/2 to 2 miles. i think the combo of losing coolant from the cooler and it pumping oil in the coolant system is what hurt the headgaskets. You have to realize that if a coolant system is low enough on coolant the temp sensor won't register without liquid being on it. So , if you have a sudden loss it may not ev en register hot. Thats why they came up with a sensor in the bucket so you would know its getting low.
My '94 small block does, even with NO coolant in the engine at all it still reads the temp. And boy howdy does it come up FAST without coolant there...
When resealing the cups, is it better to do them while the heads are on the bench or after the heads are installed and I'm getting ready to put the injectors back in?
Yeah I've got the loctite, I was just wondering if it would seal better if I waited till I was ready to install the injectors and tighten down the injector hold downs to sort of press the cup in there better.
Where and why are you using red loctite? I must have missed this part
when I did this the first time i just used a little silicone on the o'rings to get them to slide in better. is that not right?
when I did this the first time i just used a little silicone on the o'rings to get them to slide in better. is that not right?