Recently completed the head gaskets on my 05 LLY. Overall things went back together smoothly but truck has a few issues now that its back running.
1. The truck developed a pretty substantial ticking noise after gasket replacement. It was not that bad during the initial startup, but during test drive when engine was loaded it got worse, almost like it blew a manifold gasket out. It is hardly noticable under 2000 RPMs but anything over that or when the engine is loaded it sounds like a 6.0 Chevy engine with a bad manifold. Sounds like noise is coming from the driver side. Last night we pulled the inner fenders off and checked all the manifold bolts, up-pipe bolts, and v-bands. They were all tight, and there was no signs of soot blowing out of any of the gaskets. The valves were all checked and set up during the re-installation as well. ARP's and everthing else under the valve covers were all torqued to spec. I'm not sure what to check next. Perhaps pull the valve covers off and check things out again?
2. The return lines are leaking in a few spots. Is there any trick to getting these to seal properly? I installed new aftermarket return lines. The old set broke upon dissasemboly. There was alittle bit of rust in the tops of the injectors from them being exposed under the hood. Cleaned them the best I could. It appears that the fittings are pushed down into the injector all the way and the clips are all intact. Could this be related to the ticking noise? Perhaps it's an injector?
3. I'm still getting low coolant level message upon startup on the cluster. Coolant level is fine and system is no longer substantially pressurized... Bad coolant level sensor? Anyone know where I can source a new one?
1. The truck developed a pretty substantial ticking noise after gasket replacement. It was not that bad during the initial startup, but during test drive when engine was loaded it got worse, almost like it blew a manifold gasket out. It is hardly noticable under 2000 RPMs but anything over that or when the engine is loaded it sounds like a 6.0 Chevy engine with a bad manifold. Sounds like noise is coming from the driver side. Last night we pulled the inner fenders off and checked all the manifold bolts, up-pipe bolts, and v-bands. They were all tight, and there was no signs of soot blowing out of any of the gaskets. The valves were all checked and set up during the re-installation as well. ARP's and everthing else under the valve covers were all torqued to spec. I'm not sure what to check next. Perhaps pull the valve covers off and check things out again?
2. The return lines are leaking in a few spots. Is there any trick to getting these to seal properly? I installed new aftermarket return lines. The old set broke upon dissasemboly. There was alittle bit of rust in the tops of the injectors from them being exposed under the hood. Cleaned them the best I could. It appears that the fittings are pushed down into the injector all the way and the clips are all intact. Could this be related to the ticking noise? Perhaps it's an injector?
3. I'm still getting low coolant level message upon startup on the cluster. Coolant level is fine and system is no longer substantially pressurized... Bad coolant level sensor? Anyone know where I can source a new one?
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