Comeback- Failed AFM lifter
#1
Comeback- Failed AFM lifter
Hello,
I have a 2017 6.2 truck in the shop. Last year, the number 4 intake lifter came apart and bent the pushrod. So I did a soft AFM delete- VLOM modification and oil port blockoff with PCM tuning. I also replaced all the lifters on the right side with new OEM lifters and installed thick wall pushrods all the way around. Everything was great until 15K miles and a year later the same lifter #4 intake has failed again. This time it will move for 3 cam revolutions and then the rocker stops moving. Am i missing something here? Has anyone seen this before? What did you find? What should i check before i send this back out again?
Thanks,
Derek
I have a 2017 6.2 truck in the shop. Last year, the number 4 intake lifter came apart and bent the pushrod. So I did a soft AFM delete- VLOM modification and oil port blockoff with PCM tuning. I also replaced all the lifters on the right side with new OEM lifters and installed thick wall pushrods all the way around. Everything was great until 15K miles and a year later the same lifter #4 intake has failed again. This time it will move for 3 cam revolutions and then the rocker stops moving. Am i missing something here? Has anyone seen this before? What did you find? What should i check before i send this back out again?
Thanks,
Derek
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Fixxer (Today)
#4
TECH Senior Member
I would guess the cam is chewed(screwed) too. Teardown time....
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strutaeng (Today)