Fluid spraying out of #8, #6 cylinders

[jcd9730]

I am suspecting I have a head gasket problem, as my truck is losing coolant internally, and oil that leaked out (due to loose oil pan bolts that I just noticed, I think) over a couple days had noticeable coolant in it. I did a coolant pressure test, which was good. Then I tried to do a compression test, the first one I've done on this truck, but 8 and 6 were spraying fluid, I think fuel but it was really hard to tell. Could be coolant, but it was only those two cylinders.

Could this be due to stuck valves? I know the seals/guides need replacing as blue smoke comes out at start up, but could this cause fuel spraying all over the place?

Incidentally, I think the fuel/fluid messed up the gauge. I did #2 and #4, and both those came up with about 60psi, before and after squirting oil into the cylinder. After I did #6, the gauge stopped working.

Secondly, would worn guides/seals cause such a terrible reading? Or the head gasket? Im going to drain the oil as soon as I can to check it, but I have never seen white smoke. I did find the intake manifold bolts were a bit loose, but I dont think enough to cause these problems.

Ironically, I just finished putting the MadElectric New System in (best upgrade yet!), and my truck is running smoother and pulls stronger than ever. I was just getting ready to finally start work on sound when I found the leak

[darkhorse970]

Sounds like you have a head gasket problem (or worse). I'd at least pull the heads and see whats going on, or just pull the engine and go through it completely.

[TobyArnot]

Originally Posted by jcd9730

I was just getting ready to finally start work on sound when I found the leak

That's the way these old trucks do you. I spend enough time just keeping my DD roadworthy. I have to make time for upgrades. :: Sounds like at least a head gasket problem. Pull the heads, have 'em checked for flatness, cut if necessary. Make sure the block surface is "flat". The steam hole between #6 & #8 on SBC have a weak spot. Best of Luck. Let us know what you find

[jcd9730]

Could the fuel spraying out the cylinders be due to a valve problem? A cracked head gasket wouldnt cause anything to spray out the cylinder would it?

[Ol Blue K20]

Could be coolant and thats what I think it is because 6 and 8 are right next to each other

[jcd9730]

Yeah, I guess at this point pulling the heads is the best choice. How hard is it to do a full valve job? Or would it be better/more cost effective to just replace the heads instead? I'm assuming machining heads isn't cheap