DaleA
08-01-2009, 11:34 PM
A week or two ago, I posted about my new (to me) 92' K2500 Chevy Silverado 6.5 TD that wouldn't start, it only turns over. That is until the flex plate trashed due to the starter bolt breaking due to absence of bracket (done by previous owner).
Now on to the sequel. I got a used flex plate from a 6.2 that bolts on perfectly to my 6.5/480le . You probably know where im going with this. I unbolt everything with the two top bolts on the trans being a pain in the rear (literally they were as i slipped and landed on the oil fill. I will not discuss what went where). Trans pulled back, old flexplate out, new flexplate onto crankshaft and trans slid forward bolted on, all frame mounts bolted and all. The last thing I need to do is install the flexplate to torque converter bolts.
I learned something new today. The flexplate for a 6.2/700rwhatever have the wrong bolt spacing for my 6.5TD/480le. bummer. Even though I cant move, I can start troubleshooting the no start issue.
Here is what I have discovered. The engine turns over very strong and acts like it wants to start but cant. Gray smoke and no starting. Seems the glow system is working as it should, I checked all connections it works. I was thinking ahead and plugged the truck in all night to be sure everything is warm. Lift pump is working and there is plenty of fuel to the IP. Pulled the second injector line off on the drivers side. With the engine cranking, fuel sorta just dribbles out, not what I expected it would be like. I put my finger over the line and there was a bit of pressure but not much.
What amazed me was the amount of blowby coming from the "tuna can" There was lots of blowby from the dipstick tube when the dipstick was removed, and the oil fill tube as well. I stuck a paper towel into the "tuna can" hose and the pressure buildup shot the paper towel into my face. Seriously, how much backpressure is to much? This seems to be a severe amount. Seems there is more air coming from the motor than whats going in. As soon as I get a diesel compression tester, im going to check compression. Any suggestions or hypothosis?
Now on to the sequel. I got a used flex plate from a 6.2 that bolts on perfectly to my 6.5/480le . You probably know where im going with this. I unbolt everything with the two top bolts on the trans being a pain in the rear (literally they were as i slipped and landed on the oil fill. I will not discuss what went where). Trans pulled back, old flexplate out, new flexplate onto crankshaft and trans slid forward bolted on, all frame mounts bolted and all. The last thing I need to do is install the flexplate to torque converter bolts.
I learned something new today. The flexplate for a 6.2/700rwhatever have the wrong bolt spacing for my 6.5TD/480le. bummer. Even though I cant move, I can start troubleshooting the no start issue.
Here is what I have discovered. The engine turns over very strong and acts like it wants to start but cant. Gray smoke and no starting. Seems the glow system is working as it should, I checked all connections it works. I was thinking ahead and plugged the truck in all night to be sure everything is warm. Lift pump is working and there is plenty of fuel to the IP. Pulled the second injector line off on the drivers side. With the engine cranking, fuel sorta just dribbles out, not what I expected it would be like. I put my finger over the line and there was a bit of pressure but not much.
What amazed me was the amount of blowby coming from the "tuna can" There was lots of blowby from the dipstick tube when the dipstick was removed, and the oil fill tube as well. I stuck a paper towel into the "tuna can" hose and the pressure buildup shot the paper towel into my face. Seriously, how much backpressure is to much? This seems to be a severe amount. Seems there is more air coming from the motor than whats going in. As soon as I get a diesel compression tester, im going to check compression. Any suggestions or hypothosis?