Automotive Vehicle Repair & Performance Shop
AFM and DFM specialist!
USA Company Located SE SOUTH DAKOTA
Just got finished tearing down and replacing collapsed DoD lifter on my 4th gen 5.3L (2008 Silverado). I’ve now got my computer tuned to shut off AFM/DoD and am wondering…. Would just cutting the oil tower gaskets inside the VLOM and the tune be enough to prevent the issue in the future, without a plug? Or is the plug absolutely necessary? Thanks
Hello. I have a 2012 Tahoe with 150k miles. I had a collapsed lifter once where it was making the knocking sound. It took a few minutes and it released on it's own and ran fine again. I purchased the oil blocker plug and lifter release tool. I installed the plug and clipped all the vlom gaskets per the instructions. I sent off the PCM and had the AFM turned off. The vehicle ran great for a good while until last weekend. Now I have a misfire on cyl 6. I have done all the normal troubleshooting steps with everything working fine. The last part was to check valve train operation. Pull valve cover, use test relay and crank. Every time I crank the engine, the number 6 intake rocker works normally for 3-6 cycles, then stops moving completely, almost as if it is building oil pressure enough to activate…
BTR has good stuff. You should be in good hands. Hopefully they also inspect, mention and take care of any leaking cooler lines, ball joints, etc you agree to like I would. Glad I could help.
2013 GMC Sierra 1500. Currently at the dealership:
SCAN AND FOUND P0304. CHECK AND FOUND IGNITION COIL FIRING. CHECK AND FOUND NO COMPRESSION ON #4. REMOVED VALVE COVER AND FOUND BENT INTAKE PUSH ROD. RECOMMEND ENGINE TEAR DOWN AND INSPECTION FOR LIFTER/CAMSHAFT DAMAGE. $800
Unfortunately, misfire happened on the way to work, so it's probably done 50 miles since it started misfiring.
So I'm going to take it home 5 miles and try the lifter release method. Perhaps AFM delete if it comes to that.
Would it be better to drive it the 5 miles with:
New pushrod
That's kinda cool. I made a momentary switch with a set of leads on the end that I can plug into relay, connector, or fuse sockets.
Good morning! I just received the pushrods and can’t wait to try them out. I loved the little gift you included!
One of my lifters/lifter guide failed. Unfortunately, it wasn’t stuck. When I put my little camera in the hole I saw where it was turned. Anyway, that means everything must be done. When I removed the pushrods two of them were bent (same cylinder as the failed lifter). I just assumed I might as well replaced the rocker arms with the upgraded trunions to go with your pushrods. Any recommendations? Should I swap the springs too while I’m at it?
Good morning! Do you have any dod deletes or timing videos of you dropping the oil pan for the Gen V engine? I’ve mostly only seen your video where you loosened some things in order to barely get the camshaft out. Since this will be my first job dealing with timing, I want to take the best route even if it means adding more steps to the process. I’ve watched other people’s videos when searching for timing, chain replacement, oil pump replacement, etc but would like to see if you have one since you tend to be more detailed.
With the VLOM off you pressurize it from the block oil ports side with shop air. Don't use full pressure of course but you are checking for leaks. At rest there should be very little to no air going past solenoids. If it sprays like crazy somewhere you will want a VLOM plug in it.