I have a 1989 GMC jimmy full size 4X4 with a 350 fuel injected engine that has well over 100,000 miles on it....
The ol girl started ticking a few days ago, im pretty sure its the lifters and I am planning to change the oil to strait 40 weight valvoline and adjust the lifters...... If this does not help what else can I do? The ticking is heard from the top of the engine but I can hear it at the bottom as well (hopeing its the lifters)
Also is my engine doomed to die soon???
please help so I can fix the ol girl up... :]
(OTHER DETAILS)
I have done auto body for 8 years so I know my stuff im not just guessing or speculating... although I am by far no mechenic I do know the basics... I will be working on this myself because I trust no hands but mine on my baby! :]
PLEASE HELP ME SAVE HER!!!!
2007-03-31 04:16:55 · 6 answers · asked by mindfog27 2 in Cars & Transportation ➔ Maintenance & Repairs
The ticking is your lifters. They are telling you the engine is low on oil. The lifters in a 350 are hydraulic and there is no adjustment. The adjustment is to the rocker arm springs under the valve covers. (Check your Chilton's, Haynes or Motor Age Manual) Forget the straight 40W. A 350 runs best on 10W-30 or 10W-40. A 350 can take a lot of abuse - even a fenderbender working on it - that's why they've been around for so long.
2007-03-31 05:07:42 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Sound is tricky, but ticking is usually the lifters...bottom end noises are usually knocks.
With that many miles on it, it's likely the cam lobes have worn and "dished" the bottom of the lifters.Sometimes the lifters get little cracks in them, causing them to lose a little oil until they expand and pump up. Does the sound go away after a few minutes of idling? If it gets softer, it's probably that the lifters are taking that long to "pump up". Be wary of just re-adjusting the preload on the lifters, since it could change the valve clearance in the cylinder. If you do it (re-adjust), do it slowly, and AFTER the truck is warmed up good.
Oh, and don't put 30w or 40w oil in it...the engine will starve for oil when cold...even in summer...
2007-03-31 04:33:40 · answer #2 · answered by Michael B 6 · 0⤊ 1⤋
you have hydraulic lifters, good? they're in all likelihood sticking. you will might desire to place an additive into the oil. in case you won't be in a position to locate something perfect, there is an previous trick: positioned a quart of diesel gasoline into the oil and run it for roughly 5 minutes. Then do an oil substitute. that could desire to sparkling up the lifters exceptionally a lot. Double examine the time on that, nevertheless, my memory must be off.
2016-11-25 02:02:17 · answer #3 · answered by Anonymous · 0⤊ 0⤋
40 weight is ok,as long as its warm outside,but i wouldnt use it in the winter.you might try adjusting the lifters,to get the slop out of them,also have you ever considered flushing out the engine,before you change the oil and filter.you might do that after you get the lifters adjusted.
2007-03-31 04:24:19 · answer #4 · answered by Anonymous · 0⤊ 1⤋
That's a good assessment on your part.
Adjusting valve lash on it is messy. It needs to be bone while it's running and warm. That being said, mechanically speaking it's simple to do.
If you do intend to adjust the valves, they make little clips that attatch to the rockers to minimize oil being sqirted all over the place and they are worth buying or borrowing.
2007-03-31 04:25:48 · answer #5 · answered by Mr. KnowItAll 7 · 0⤊ 1⤋
oil treatment will help
2007-03-31 15:45:20 · answer #6 · answered by ronnie b 2 · 0⤊ 1⤋