I think this could be bad...
#32
I feel also that the atf flush caused my issues. I had a pretty tight engine, no noises, except lifters at startup. It hasnt even been 500 miles. I can tell you this, the inside of that engine is CLEAN. Now its just broke! Well hopefully the bearings are soft enough not to have damaged the crank.
Folks, please do not "flush" your engines with anything. If you've been maintaining them right, they won't need it and if you haven't, you're basically hitting a hornet's nest with a baseball bat...or playing Russian roulette...your choice.
Dave
#33
The above is the whole reason I install a new quality filter before doing any kind of flush. The flush was also after running synthetic for 6 months, which will break down sludge as well, only slower.
I agree with Dave on the flushing. It is risky, and sometimes it uncovers problems. Just switching to synthetic IMHO is the best route.... unless you know how to work on an engine.
John, you never answered my tap or knock sound descrition...
I agree with Dave on the flushing. It is risky, and sometimes it uncovers problems. Just switching to synthetic IMHO is the best route.... unless you know how to work on an engine.
John, you never answered my tap or knock sound descrition...
#34
I did use a brand new k&n oil filter for the flush. idle for 20 minutes. the sound is still more of a tapping then knocking, but i have listened to all the lifters with a steth., the exhaust, each exhaust bolt, the intake, and the noise is not present except the block between the starter and the block.
#35
#36
maybe, i can see if the metal is ferrous. if it isnt then that would pretty much tell me it is a bearing wouldn't it? it seems to me that if a lifter is tapping, i would hear it clearly at the top of the engine. i can hear every lifter well, some are noisier than others, but none are making that noise imo. but we will see! i plan to take pics
Last edited by oljohnboy; 05-19-2009 at 12:43 PM.
#37
maybe, i can see if the metal is ferrous. if it isnt then that would pretty much tell me it is a bearing wouldn't it? it seems to me that if a lifter is tapping, i would hear it clearly at the top of the engine. i can hear every lifter well, some are noisier than others, but none are making that noise imo. but we will see! i plan to take pics
Cheers,
Dave
#39
This is also why i do not recommend a ATF engine flush, if it aint broke dont fix it.
Full synthetic motor oil has at least twice the detergants as conventinal motor oil and will slowly and safely clean your engine while you drive as long as you dont go 15,000 miles between oil changes.
If you do not know how well your truck was maintained then dont worry about it and just start from scratch like nothing has ever been done to it.
Full synthetic motor oil at 3,000 mile oil change intervals for the first 2-3 oil changes will do wonders.
Then you can go to every 5,000 miles with full syn.
Full synthetic motor oil has at least twice the detergants as conventinal motor oil and will slowly and safely clean your engine while you drive as long as you dont go 15,000 miles between oil changes.
If you do not know how well your truck was maintained then dont worry about it and just start from scratch like nothing has ever been done to it.
Full synthetic motor oil at 3,000 mile oil change intervals for the first 2-3 oil changes will do wonders.
Then you can go to every 5,000 miles with full syn.