Engine overheating after intake remove/replace?

[JohnnyPC1]

I took the top of my engine apart to ease the replacement of my distributor, clean it all up a bit, and to investigate a ticking lifter. Well I got it back together fired it up and now the thing overheats?!?!? WTF?

Any major reasons pop into your minds as to what I might have messed up? I Can't even get it down the driveway and around the block before it's 200 degrees...3 minutes tops. I took the thermostat out to see if that was stuck shut or something but nope, still overheats quick.

I installed new 93346 intake gaskets and the only thing I can imagine is that somehow they got installed wrong? Is this even possible? During install I swear I remember them lining up just like the ones I took out, so I don't immediately believe the water passages are somehow suddenly obstructed - BUT in all honesty, I did do all this late night and was enjoying a couple beers during the process so there enters my only doubt as to how I did things. Could they be installed backwards or something?

Thanks in advance for any ideas I could chase down over here!

 

[bezerk]

Re: Engine overheating after intake remove/replace?

what do you see when the rad. cap is off while running?

 

[syclone0209]

Re: Engine overheating after intake remove/replace?

are you going by the guage inside the truck. are you sure you hooked it back up. did you put water back in the system. ive taken the belt off to listen for noisy lifters before and without the water pump even turning mine will run longer than that without getting that hot.

 

[JohnnyPC1]

Re: Engine overheating after intake remove/replace?

Hmmmm, at idle it doesn't do much - revving to 3k or so it starts to suck down a bit...coolant is unusually rusty looking even though I took time to flush it all out while all the hoses were apart...(I noticed this prior to disassembly - another reason I wanted to take it all apart - truck doesn't get driven much other than to pick up some parts)

 

[JohnnyPC1]

Re: Engine overheating after intake remove/replace?

Ya, I'm basing this off the stock guage but after the spin around the block you can tell it's HOT...

 

[bezerk]

Re: Engine overheating after intake remove/replace?

these trucks are hot and get hot. you're geussing

 

[NecroWolf]

Re: Engine overheating after intake remove/replace?

thermostat crap out? did you use new lower intake gaskets you might have a small leak.

 

[JohnnyPC1]

Re: Engine overheating after intake remove/replace?

Yup new gaskets, and I took the thermostat out to eliminate that possibility - leaking where and how would that affect temps so drastically?

Sure, factory guages are always suspect, but isn't a guess where you need to start if the trouble isn't obvious? I've just never seen the guage swing so far so fast like it does now, so even if the guage was waaay off, at the very least it's telling me there's a problem somewhere in there...kind of silly to run it and completely blow it by incorrectly assuming the guage is simply lying to me...

 

[gkrcr882]

Re: Engine overheating after intake remove/replace?

I second a gauge malfunction. In all honesty, our factory gauges suck- Temp, oil psi, fuel, boost. I need a new cluster since mine are so bad, the spedo reads 20 low. Try checking the temp with a different gauge or other means before going too crazy. You just might have a short somewhere.

 

[TYHOGG]

Re: Engine overheating after intake remove/replace?

Could be a blown head gasket if the coolant is disapearing from the res/radiator. Have you looked at the oil?

 

[NJ93TY]

Re: Engine overheating after intake remove/replace?

Have you checked the fan clutch? That bitch should be pulling some major air when the truck is hot. If its not then it should be replaced. When the truck is hot see if the clutch is spinning fast or if is looks like its draggin slow.

 

[JohnnyPC1]

Re: Engine overheating after intake remove/replace?

Hey thanks for chiming in guys! So no worries about me somehow mixing up the gaskets? I figure they could only go on one way right? I'll check the actual temps but man, you get to know your cars and just know when something is different or not right. Fan clutch is good - lots of movement and you can hear it release up in the rpms. Oil is nice and clear. Blown head gasket is interesting since it has been running like crap - that's why I wanted to replace the ignition components because I had a miss and misc sluggishness - coolant was missing recently but I attributed that to what appeared to be a leak in that bendy heater hose pipe...maybe not?

 

[NecroWolf]

Re: Engine overheating after intake remove/replace?

sometimes the intake gasket won't seat right and you'll get a leak into the chamber past the intake valve or a leak on the back side of the intake. might not be a big leak though

 

[TYHOGG]

Re: Engine overheating after intake remove/replace?

sometimes the intake gasket won't seat right and you'll get a leak into the chamber past the intake valve or a leak on the back side of the intake. might not be a big leak though

It could but a little as a teaspoon of coolant in the intake chamber smokes out the tail quite noticably.

I would do a compression check if you going to change the plugs out anyhow. Should tell you if its a gasket or not.

 

[supersports10]

Re: Engine overheating after intake remove/replace?

plain and simple you have the gaskets backwards

the little closed off coolant passeges should be twords the back, i'll bet anything there twords the front, if so, no coolant is passing through the upper radiator hose.

i'll bet my paycheck on that one

 

[TYHOGG]

Re: Engine overheating after intake remove/replace?

plain and simple you have the gaskets backwards

the little closed off coolant passeges should be twords the back, i'll bet anything there twords the front, if so, no coolant is passing through the upper radiator hose.

i'll bet my paycheck on that one

I can cover $15.00.

 

[syclone0209]

Re: Engine overheating after intake remove/replace?

that would be an easy check wouldnt it. take off the upper hose to thermostat and pour water in the intake and see if it backs up. or if you drain the system and the intake is still full. both wold tell you if the gaskets are backwards right?

 

[turbodig]

Re: Engine overheating after intake remove/replace?

that would be an easy check wouldnt it. take off the upper hose to thermostat and pour water in the intake and see if it backs up. or if you drain the system and the intake is still full. both wold tell you if the gaskets are backwards right?

Chunk of coat hanger down the thermostat hole will verify this as well...

Seen the gaskets get flipped lots of times...

 

[JohnnyPC1]

Re: Engine overheating after intake remove/replace?

I'll try the coat hanger thing - and to run with the gasket idea a bit, check this out - I took the water pump off today, disconnected the top rad hose at the rad, quirted my hose nozzle into it full blast and the water dribbled out the left hole, but not the right? I figured they would dribble both the same? Thanks for workin through this with me!!!

 

[JohnnyPC1]

Re: Engine overheating after intake remove/replace?

I'm a dork - See pic. Took everything part again, got em right and now it's cooling like it should be! Appreciate all your input!