Originally Posted By: 19jacobob93
Originally Posted By: yvon_la
How are valve train adjusted now a days?hydraulic like in the old days?could be lifter had very hot oil and cooked the oil in the lifter .wich would stick the lifter.or if oil too thick for engine was used .like honda recommend 0w20 so if you d use 5w40 it might be a problem.
This seems the most likely, I ran the car for 20 minutes once with no coolant and the temp gauge was off the scale! These engines have a fail safe cooling sytem (fires on coolest cylinders) and a dual head gasket which means they can be run without coolant but I guess the oil can't withstand these temps even if the engine can.
Also I added a full bottle of Lucas additive shortly after this which gave me a cold start knock so I changed it.
Maybe both these took their toll on the lifters!
Also these are self adjusting hydraulic lifters
Lucas?
Oh dude. That stuff is utter garbage.
It's nothing more than very thick non additized oil therefore all it does is thicken the oil in the sump and dilutes the oils additive package.
If you used that then overheated there is absolutely no doubt in my mind it's created deposits and could very well be restricting oil flow.
Nothing is better than tearing it down and cleaning it manually however if that's not an option then I suggest using an idle flush type product and following the instructions to the letter,then using a conventional oil 1 grade thicker than specified and substituting a quart of oil with either mmo or seafoam or whatever your can find locally and run shortish intervals,like 1500-2000 miles,and monitor the oil daily to see just how quickly it blackens.
If it's very fast you can assume there is a deposit problem,so from there you can assess just how many times you need to repeat the process.
Overheating the engine fried the oil in some spots creating deposits,and those cooked on deposits may not even clean up with a flush type product,it may require manual cleaning.