sticky lifters?
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Freshman User
Joined: Feb 2004
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From: ak
sticky lifters?
hey guys, i was out working on my boat (95 351 ho) trying to get ready for summer. Im doing a handfull of exhaust work so i thought i would run a compression test while the manifolds were off, everything looked good 135-150# except for #4 which was arround 30. I checked the exhaut valve and it wasnt closing all the way so i loosend the rocker towers and it seems that the springs are compressing and not the lifter. then i loosend the springs on a cylinder that tested good before and the lifters wouldnt compress anymore and had no pressure on compression stroke either. should i wait to try and fire this thing up to see if they will loosen up or put in all new roller lifters? I went and dug out an old pushrod from a tore down engine and tried hammering the lifter a bit but it didnt seem to want to compress. I am also running rotella 15-40 i dont know if that would have any effect on the lifters.
thanks for any ideas
thanks for any ideas
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Freshman User
Joined: Feb 2004
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From: ak
cool, after reading a few other threads im not sure on the lifters though. I was assuming that they were roller lifters, but looking down the pusrod holes last night i didnt see any special hardware down there. It jut looked like lifters sitting in the hole flush with the block. I wonder if the didnt use roller lifters in the marine/industrial aplication because of the mild cam. Its a 95 ho marine motor.
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Joined: Aug 2002
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From: Southern California
My family has stored cars for both short and long term duration....I can definitely relate to dealing with sticky lifters! I agree, to start the engine would be a little risky. What I have found that worked for me, is to spray a decarbonizer (PB blaster, etc) on the stem, then take a flat punch & with a good size hammer, tap the valve (with only moderate force) to get it to move...it takes a little bit of patient but it will work the carbon out. I rememeber one engine that I had sitting in a vehicle for 5 years....had multiple valves sticking...everybody was shocked and thought i was crazy but I poured kerosene over the valves, let it sit for about 1 hour, checked each one with the hammer, punch and low and behold all were free. I then poured oil (a couple of qts) over the valves and drained the oil. Fired right up and no problems.
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Joined: Nov 2009
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From: Chicago area
cool, after reading a few other threads im not sure on the lifters though. I was assuming that they were roller lifters, but looking down the pusrod holes last night i didnt see any special hardware down there. It jut looked like lifters sitting in the hole flush with the block. I wonder if the didnt use roller lifters in the marine/industrial aplication because of the mild cam. Its a 95 ho marine motor.
See link for pic.
http://www.streetperformance.com/m/c...rd-racing.html
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