Leaderboard

I have extra ECMs and I thought that it might be a better test to swap a different one in keeping the original prom. Wasn't that bad as I used the tutorial in the "How to" section. Anyway, swapped one in and took it for a ride. Drivability was much better however at higher RPMs under hard acceleration it does start to buck, but no where near what it was before. I then thought that I would try a different ECM with a different prom and the bucking came back as before. So for right now I am leaving it with the original prom and the different ECM and see what happens. At any rate while not perfect I got most of it back.

A month or so ago, I found a little coolant puddle on my garage floor. Decided to look into it now that the cold weather season has set in. After pressurizing the cooling system with a radiator pump tester, I saw a slow drip off the bottom of the engine. Followed the trail of coolant to the top of the engine. It was a slowly oozing up between the intake and the head right below the EGR valve . So I pulled the intake yesterday and this is what the gaskets look like. Kinda worse than I was expecting. Surprised it was that kinked and distorted around the ports. Now I am waiting for all the misc gaskets and hoses to put it all back together.

Check around the water ports, particularly the corner that was leaking. The intake manifold surface will likely be pitted or eroded around that port from galvanic corrosion. If it is and it looks fairly deep, I have had good results filling the erosion with epoxy such as JB Weld and then a flat file to smooth the surface.