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Home » Public Forums » GMCnet » Is There Anything Better Than Hearing It Run For The First Time? (Started and ran the GMC engine for a bit today.)
Is There Anything Better Than Hearing It Run For The First Time? [message #160558] Thu, 16 February 2012 17:47 Go to previous message
A Hamilto is currently offline  A Hamilto   United States
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Registered: April 2011
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With some help from my mechanic sister, we started the engine today for the first time since I have owned it. It seems to be firing on all 8, but there is a sporadic knocking noise in the top passenger side. Hard to isolate it any more than that as there is an intermittent squeal in the front (by intermittent, I mean it may be periodic, but it is not continuous). Couldn't tell if the front squeal was a belt, an alternator or water pump bearing or power steering pump, or fan clutch, or the fan scrubbing on the shroud. Also need to disconnect power to the air compressor until I get the knock figured out because the air compressor was contributing to the all the other noise that is making it hard to tell what is knocking on the passenger side of the engine (noises echoing all over the engine compartment).
I started it the first couple of times with the ancient chassis battery that came in it. It would fire from the gas we primed it with, but wouldn't run and we pretty quickly ran the battery down. Switched to jumper cables and had to figure out if the needle valve was stuck shut or the fuel pump was bad. It turned out that the fuel pump was bad. Got a gravity feed system jury rigged and all was better. Once the oil got everything lubed up, it smoothed right out.
Getting it started may not seem like much of an accomplishment to those that yank an engine in 8 - 10 hours by themselves, but it made my day.
 
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