They are on the sides and rear of the block. I am guessing that you are referring to the "Freeze" plugs. That term in itself is deceiving as these plugs were never designed to provide any sort of freeze protection. Many old timers call the "welsh" plugs but I suppose because they popped out when an engine block froze, they were incorrectly called freeze plugs. The caps cover casting blocks in the engine and are usually made of metal. The are located on the sides of the block under the heads and exhaust mainfolds but above the oil pan. They are harder to get at then they are to replace. I would suspect that if they failed you usually have other related issues as well. VBdenny
Ummmm......... I think you want to use spark plug wires.
Its not easy. I did it on a 77 Caprice and it took me three days and two broken fingers. Take it to a shop.
yes! the coil is what sends fire to your plugs
check for spark at plugs sounds like a ign problem
Any Auto Parts Store can provide this information. BTW, the are called Freeze Plugs or Casting Plugs, not Frost Plugs.
Change spark plugs and wires, change all fluids, check o2 sensors, distributor and rotor cap possibly, change all filters...and a fat wallet...
There are 8 plugs. 2 plugs are in the back of the engine were the fly-wheel is. There are 2 plugs on both sides of the engine block. 1 plug on each side are behind the motor mounts, you can not see them. the other one is behind the starter and the other 1 you can see on the drivers side of the engine block. There are 2 plugs on the front of the engine block, 1 on each side of the timing cover.
8 (V8)
Look in your owner's manual or on the placard under the hood. It is listed there. Any parts store can also provide this info, if the placard is missing.
You can probably only get to 2 or 3 plugs from the top, but the rest you have to get from underneath the vehicle.
There are four spark plugs on each side of your 1991 Chevrolet engine. The spark plugs will be near the bottom of the engine.
It has 8 if it is a V-8 engine.