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Followup To
Question -
After 3 years on blocks, I fixed the body damage on my 88 Chev S10 pickup (2.8L V6)and started off. I noted poor idle and some power loss as well as a knocking sound and rough idle. A compression check showed that the front driver side cylinder had no compression. On inspection, the rocker arm for the intake valve was broken and the push rod appeared to be abnormally high. The push rod does not appear to move up and down when the engine is turned over, while all of the other valves work fine. I would like to know why the push rod does not move, before I spend the time to remove the broken stud and re install the errant rocker arm.
In most cases you have an internal failure of the HYDRAULIC LIFTER that controls that particular push rod.
If your LUCKY you can poor some type of automotive solvent that will break up the foreign material/Oil sludge that has built up within the lifter as desolve it. This may take several applications per day for 2 or 3 days until it is cleaned out and starts to work properly.
If this fails, You will have to replace the lifter.
Let me know
I am alway in need of Car, Truck and SUV service manuals as well as MOTORS MANUALS and if you would like to donate any that you have, I will be more than happy to pay REASONABLE shipping to get them. I do not want any Chilton or Hayes manuals as I personally do not like them as the information contained in them is very mis-leading in my opinion.
Retired in New Mexico and teaching my son to learn the trade.
What is the best solvent to use to break up the lifter? I would imagine that some materials might contaminate the oil.
I grew up on motor manual, very few primative tools and a 41 ford. I could not find the simple information on whether there were lifters in the V6 in a Clymer manual. I just tonight found a Motor Manual that showed there were lifters. In the future, I will have to seek the better manual. Thanks for your assistance.
You help would be appreciated. Thanks
Answer -
autohelp
AnswerYou CAN get the lifters out of the engine block WITHOUT pulling the intake manifold off.
Simply remove the valve cover and the complete rocker arm assembly and using a special tool that can be purchased for about $30.00 at any auto parts store.
One the rocker arm shaft assembly is removed simply insert the tool down into where the pushrod goes and tighten the tool and pull out the lifter. You will most likely have to pull a little bit, Push it back in, Pull a little bit, Push it back in until tthe lifter finall y comes loose from the lifter hole.
You can either disassemble the lifter being very careful about laying out the internal parts of the lifter in the EXACT same order so you can replace them back in the same order from which they were dis-ssembled.
Once you have the lifter internal components removed you can use a fine wire brush to clean out the CRUD that has built up inside the lifter and clean the internal components and reassemble the lifter and re-install it.
OR, You can buy a new lifter but BE CAREFUL as your engine may have oversized lifters being 0.25 mm. just make sure that you get the new version lifter that has a NARROW FLAT surface along the lower 3/4 of the lifter body length.
Personally. I would clean mine and re-use it.
Let me know.
autohelp.
