Ive been looking at an s10 blazer with a 2. The 2. Other than that, I had pretty good luck with it. Even if that doesn't become an issue, it is a very underpowered engine in the S10 Blazer and it drinks gas horribly for such a smaller V6.

If you must get an S Blazer, consider a later model or newer with the 4.

chevy s10 engine knock

That is a very reliable engine and while the mpg didn't change too much, you'll at least have the power to justify it.

I'm an import guy but I know that the 4. It's basically a chopped GM engine with 2 less cylinders and smaller pistons. I have an 86 GMC s15 that had roughly thousand miles on it before the motor went out. Very reliable motor you just need to maintain it, best thing to do is put a cold air intake, throttle body spacer and a dual exhaust.

That'll get the little old motor to about HP and miles to the gallon. That's what I did and I still prefer this antique over newer vehicles. Terrence B is exactly right until he goes into the chopped business.

The 4. If the price is right a swap is easy enough but the trans will not fit. You will need an adapter or the trans out of a blazer with the 4. One problem with the 2. The returns would get blocked very easily.

Answer Save. Terrence B Lv 7. How do you think about the answers? You can sign in to vote the answer. Had Chevy S with the 2. Great little truck Bottom went out on the previous elderly owner at 30, The 60 degree angle of the cylinders does not lend itself to long term durability.

Barbara Lv 4. Terry W. Show more answers 3. Still have questions?

3 Causes of Engine Knock

Get your answers by asking now.So i have a 96 chevy s10 with a little under k miles, and 2. At low idles it was getting a knocking noise at random intervals. A little research led me to believe it was due to premature wear of the timing chain, which i have replaced.

Now, I a very similar noise has returned. It only so far is happening at idle after freeway speeds, like at the end of the off ramp. The noise dissipates and then disappears with a little speed or higher rpm. Could this still be the timing chain? Was I on the wrong track to begin with and it never was the timing chain? The quality of the noise is a little different, slightly more consistent and predictable than before so Thank you.

Michael answered 7 years ago. Andrew answered 7 years ago. Agree with Michael. After a highway trip oil pressure tends to be lowest, maybe you need a new oil pump. Make sure the oil level is correct and changes are current. I took it for a drive up and down the freeway and around town and took some notes on the oil pressure. As for pressures, from the dashboard gauge: Cold start: 65 and ranged while cold from about No noise.

Once warm, it was ranging from about 50 to 75 on the highway, and idled down to about 25 or 20 and the noise would be slightly audible. For whatever reason, it was not so bad today as a couple days ago. It was around 30 at idle when I would not hear. So there definitely seems to be a correlation between oil pressure and the noise.

Thanks for your help Michael and Andrew.These sensors detected incorrect fuel-air mixture combustion in the cylinder. The knock sensor relayed the information to the engine control module, which adjusted engine timing to compensate for the knock. It was directly behind two rigid fuel lines leading to the intake manifold.

The knock sensors in 4. The pre models had two sensors, one on each side of the block.

chevy s10 engine knock

The later year models had a single knock sensor mounted in the engine block in front of the starter. This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

To submit your questions or ideas, or to simply learn more about It Still Runs, contact us. Where Is the Knock Sensor on a 4. Light Trucks The knock sensors in 4. About the Author This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.I have a Chevy S When I first started one morning, I had a pretty good knock coming from the engine.

Is there anything that could stop the knock and make the engine run a few more years? Sad but true--those things had the engine problems from the get-go. There used to be a website where people had class action suits for this car. But, those engines did have problems. I hope that it can, because the only other true fix is to rebuild the engine.

Scotty Kilmer Automotive Mechanic. Thank Scotty. Was this answer helpful? Thank you for your feedback! Sorry about that. Why wasn't this information helpful? The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details. Related Questions. Grinding noise and backfiring during startup by Ian P.

Car starts and then dies by Warren D. How do i fix the trunk release on a chevy aveo by Steph B. My car started making a rattling noise? Knocking noise. Is it a problem with the belt? Home Questions. Year I don't know.I noticed about a couple of weeks ago, my truck started making almost a tapping like noise.

Chevy S10 knocking noise

I took it to a repairman and he basically told me I was getting ready to throw a rod. His diagnostic consisted of getting in my truck, starting it, letting it idle for about 3 seconds, and then reving it for about 5.

He didn't open the hood. I went ahead and changed the oil, and put w in it instead of w. It seemed to help but not too much. If you listen really close to it, it almost sounds like it's coming from the center of the top part of the motor, other times it sounds like it could be under one of the valve covers. My truck isn't losing any power, and if I needed to "stomp" on it to get into traffic, it would easily go, even though right now I'm babying it. I can't figure this out to save my life.

Any suggestions? This all did happen the day after I filled my tank up, and it was very slight tapping at first, almost un-noticable. Then I left work that day, and had to get out of someone's way that cut me off, so I had to accelerate kind of quickly and it got a little louder after that.

Do you. Im no mechanic but if the sound is coming from the top of the block it could be a lifter tick. I don't know how common that is with the s10's but some of the newer vehicles that are disposable like the neons develop a lifter tick very early. Its not surprising he said it'll throw a rod because that sound can only be blamed on a few things.

My old half ton had k on it and it started ticking till it threw a rod out the pan. If its coming from the top its definitely not a exhaust donut tick. My guess is a lifter has gone, which makes sense because you wouldn't notice a decrease in power.

It would develop a knock from over revving it, running high revs for long periods of time or stomping on it when its cold.What could be causing a knocking noise and loss of engine power Do you. Knocking noise can be many. Something like you describe can be a broken piston, it can also be a broken push rod, a rocker arm off or something like that.

It's best to let a pro chekc it if you don't know what to look for. Was this answer. My blazer starts good. Of course the pressure will go up when I rev the engine or taking off. I opened the driver side valve cover and it seemed to be clean with no sludge but I still took out the rods and sprayed through them with the chem tool carburator cleaner. One of the lifters somehow popped up a little after I sprayed it with the cleaner, that I had to turn the engine so I can re-seat the rod.

It was the first lifter towards the front of the vehicle. Since this side wasn't that dirty, I chose not to mess with the passenger side valves as there's too many hoses and AC stuff in the way.

The thing is from what I've researched online, it seems that, if the lifters or rods were bad, the noise should exist no matter the engine temperature, or exist when cold and go away when warm.

When I listen around the engine, with a dowel or a long piece of metal, no noise from the valve covers or the top of the engine. I can't really use the dowel or the wire to listen to the front part of the engine due to all the belts, so I just lean in and listen and it almost sounds like it's coming from the area where the two bigger pulleys are at. Biggest pulley being the center one and also the other one to the right of it.

chevy s10 engine knock

Sorry for my description as I don't really know which is which other than to guess that the biggest pulley would be the one attached to the motor itself.

I recently bought this vehicle with miles on it. Changed the oil and filter right the same day and saw it was fairly dark oil with a little sludge but no metal shavings. I put in Mobil 1 high mileage 5w and an engine repair additive.

1998 Chevy S-10 Engine making a tapping noise

One week later about 77 miles into it, I changed the oil and filter again. I used fram filter both times. The engine is not losing power or dying on me but I'm concerned this may lead to bigger problems if I don't nip it.

Once again folks, I ask for your help in getting this figured out. Symptom is engine is quiet when cold, starts knocking sound after warm, regardless of rpm, idle or run.

And knocking speed follows the rpm as well. My vehicle is a Chevy S10 Blazer; V6; 4. Hello, These engines are roller cam and lifters so it normal for them to make a little noise at idle.

Also, it could be a wrist pin that is seized up. Since there is no sludge in the engine I don't think the oil pump pick up is clogged but you never know. Lastly the oil pump pressure relieve valve could be stuck which means the engine needs a new oil pump.

You will need to remove the oil pan and pump to see whats going on. Here are diagrams to help below Please let us know what happens, we are interested to see what it is.Ok i have this knocking noise coming from my motor but ive noticed my oil pressure has decreased to the red line on the left as soon as i push clutch in and let off gas. I have been trying to figure out what it could be and im not making any progress my oil pressure never sits where it is supposed to but i cant find any leaks cracks or holes that would cause oil pressure to not hold.

Any help would be amazing cuz im self employed and this is my only mode of transportation for me my fiance and our son. Andrew answered 3 years ago. Usually when you get to the point of knocking the damage has already been done. You could have a bad oil pump, oil pressure also goes down when your crank bearings are worn out knocking.

I'm assuming you has coolant in the oil before? That's why most do the intake gasket. When coolant gets in the oil it's usually a death sentence for a motor. I have been trying to figu So i have a 96 chevy s10 with a little under k miles, and 2. At low idles it was getting a knocking noise at random intervals.

A little research led me to believe it was due to prematur I've got an S10, model, cranks, but wont fire? Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus.

Chevy S-10 2.2L valve clicking noise

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chevy s10 engine knock

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