I own a 1994 S10 p/u with a 2.2 4 cyl engine manual trans. 100k on engine. pings intermittenly going up hill?

Question

have used different fuel same grade no change

Answer 1

These are known for carbon build up that causes pinging.
Pick up a can of combustion chamber cleaner and follow the directions. Remember to apply it slowly and use it all.
Make sure you get the sensor safe product, and even then you may have to clean your o2 sensor.

Answer 2

Might be a carbon buildup on the piston tops; I'd suggest pulling the head and checking it out (if you can't live with the pinging, of course). Naturally, once you've yanked the head, there are a number of other areas that you MAY want to address (valve, guides, timing chain, and even rings and bearings, if you're feeling handy!). Personally, I wouldn't bother with a thirteen year old vehicle, but, if you've got the time, skills and money, go for it! Good luck!

Answer 3

Change spark plugs, wires, dist. cap,rotor,(at least my 94' Sonoma, 4.3 Liter isn't coil pack, don't know about your Chev.), oil, and filter. Guarantee you'll notice the difference! Might be getting a little water in your fuel, from your gas station,(fluctating weather change), but tune-up will stop this.

Answer 4

As it says in the GM owners manaul.....

Ignore itermittent pinging. Heavy pinging that will not stop is a concenr.

If it bothers you try a higher grade fuel.

Answer 5

sounds like an ignition change. those would properly be a discomfort to interchange as they are fastened on applicable of the steerage column, under the sprint. the single on my Mustang went undesirable whilst the plastic area of it shrank and enable the ball bearing interior it come out of place. sturdy success!

Answer 6

Check your timing.

Answer 7

tune it ...try mid range gas