[Adam]

Some of you know, I did the 3400 top swap on my 3100 a couple months ago. It's been running great until what happened the other day.

Just to clarify, the 3400 swap requires you use a new lower intake coolant line that has an O-ring attachment. The old 3100 line was threaded.

So, I was driving on the highway and look in my rear view mirror and see a cloud of smoke behind my car and then the HOT light comes on. I pull over and check under the hood, turns out the slip-fit coolant line wiggled/popped out of the lower intake, most of my coolant was lost. It was late so I stopped by the store and grabbed some water and put that in so I could make it home. I fixed the line and put new coolant in on Monday.

Since then, I've had to stop a couple times because the engine is about to overheat. What could be the problem? Could the water pump have seized? If so, how do I go about checking that?

[blazerman3]

How hot did it get? If u pegged the needle the engine is cooked.

[blazerman3]

Make sure u have bled ALL the air out of the system...may take a bit. Air pockets equal no water flow.

[nitehawkjcb]

^ that's what I was thinking

[Adam]

I had my brother in-law who's a mechanic check it out. Head gaskets.

[nitehawkjcb]

Did you reuse the old ones or something?

[Adam]

I don't think they've ever been replaced, at least I haven't done so. There's also white really white smoke coming out of the exhaust.

I bought all the new gaskets today. Going to tear it down tomorrow. Someone suggested I have the heads resurfaced as well. I'll get that down too.

[nitehawkjcb]

With your topswap, did you do an entire topswap or just the LIM up? Sucks you gotta tear it back down, but here's your chance to get the heads ported.

[Adam]

Just the lower intake and up. I would have loved to do more but as always money is the issue.

[Adam]

Fixed!

What a job, but two days whole days of work and I got it done. Also fixed oil leak I've known about for a while.