Need help! 5.3 running like crap after cam swap
#33
I finally was able to do the compression test and i found out only 2 of 8 cylinders have compression.
so i took a look at my push rods and noticed that they were too long and were keeping my valves from closing all the way. Rookie mistake I guess...next step is to get a checker tool
#34
I think you're right about the push rods.
I finally was able to do the compression test and i found out only 2 of 8 cylinders have compression.
so i took a look at my push rods and noticed that they were too long and were keeping my valves from closing all the way. Rookie mistake I guess...next step is to get a checker tool
I finally was able to do the compression test and i found out only 2 of 8 cylinders have compression.
so i took a look at my push rods and noticed that they were too long and were keeping my valves from closing all the way. Rookie mistake I guess...next step is to get a checker tool
#35
Yes I did check for spark and fuel and both were fine. It turns out that only 2 cylinders were getting compression and when i the check the push rods I saw that there was too much preload on the lifters (2.5 turns once it was at zero lash) therefore not allowing the valve to close all the way. Not sure why the number 1 and 3 were still getting compression but it's obvious that the push rods are too long.
#40
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My .02.
What lifters did you use? Were they installed correctly in the trays?
With the cam you selected, you should be able to use the 7.4's fine.
Someone told me a long time ago,
Zero compression - rings/stuck valve issue
Low compression - other issue (valve not opening all the way, collapsed lifter(s))
Hope you get it figured out but I think you'll be tearing it down again.
What lifters did you use? Were they installed correctly in the trays?
With the cam you selected, you should be able to use the 7.4's fine.
Someone told me a long time ago,
Zero compression - rings/stuck valve issue
Low compression - other issue (valve not opening all the way, collapsed lifter(s))
Hope you get it figured out but I think you'll be tearing it down again.







