2003 4.3 vortec problems. SOLVED: Truck won't start after sitting for longer than a day 2019-04-25

2003 4.3 vortec problems

Poor Mans Repair Guide for Chevy,GMC Vortec Fuel Injector Spider or CSFI System: 4 Steps

2003 4.3 vortec problems

Just picked up a 96 Jimmy that is very clean,rust free and fresh paint, plan was to swap the 327 into it because the blazer rusted away, but I think I will try option 5 first. Be Safe, Be Smart, Or be Dead. I remember the first time I opened the hood on a Vortec engine and saw the plastic distributor. Good luck and keep us posted. Both the Buick V6 and the 229 cu in 3. It Got a wild hair today and changed the oil to a wildly different blend and viscosity, looking for some change, any change.

Next

Vortec 4.3L V

2003 4.3 vortec problems

Let the spider sit in the sun while you take things apart. The guy has been generous to detail his projects. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Excellent power from stop I was actually quite impressed how snappy it is. In this article I'll show you how. I think most on this group would join me in saying that the 4. It's only for the 96 models and up.

Next

SOLVED: I have a 2003 Chevy blazer with a 4.3 vortec motor

2003 4.3 vortec problems

I think some of the first 4. Most intense in the 1700 - 2200 rpm range under light throttle. What I can tell you is that it sounds almost exactly like a catalytic convertor that is coming apart inside. I bought my 1994 1500 manual transmission and 21 years later with 245,000 miles it runs better than new. A Few pairs of needle nose pliers 5. I have not checked it since, but I have to think it probably is even better now that the engine is broken in.

Next

Vortec 4.3L V

2003 4.3 vortec problems

Never drove the '35 in the 4 years I owned it, and I only owned the '67 Nova for 3 weeks. We have a beveled gear at the end of the distributor shaft that meshes with the camshaft gear. That's what we have to look for. I don't agree with you here. Crank sensor was the first thing I replaced cause it had a crank sensor fault.

Next

My 2001 Chevy Blazer 4.3 L Vortec V

2003 4.3 vortec problems

The inherent failure of the 4. For anyone who else who might know or give my samples a listen. The 229 cu in 3. The connecting rods used on the 4. Very nice, smooth, reliable engine for the most part. I was gonna try some of that sea foam in the intake , crankcase and gas tank. Any other time and they will simply test good because the problem isn't present at the moment.

Next

2003 4.3 Vortec, Low throttle, high MAP

2003 4.3 vortec problems

I don't think it is the fuel pump because I can hear it when I cycle the key and the truck does start just not after it sits for over 24 hours. It was shaking like crazy with the engine running, so I figured that was it. Could this be the computer? If I take the core out of the fuel rail where you hook up the pressure tester at it will shoot fuel out, put it back in and still no fuel pressure. Using a long screw driver, align the oil pump drive shaft in the engine with the mating drive tab at the end of the distributor shaft. Once the distributor is fully seated, the rotor segment should be aligned with the pointer cast into the distributor base. If that's what you mean by rotating the distributor. Cylinder heads 10238181 casting used with the L35 will have intake ports with eyebrows that clear the fuel injectors.

Next

2003 misfire : Vortec 4300 4.3L V6

2003 4.3 vortec problems

If you don't like it, you don't have to buy a truck with it and you didn't. Well you have a few choices 1. The engine block was revised with structural reinforcing ribs up front eliminating the two freeze plugs on the front and back along with an alloy oil pan for the S10, Blazer, and Jimmy. I have looked under the hoods of a couple of mid-90s 4. You would have a seccurity light on or flashing if that were the problem and it would be starting and stalling.

Next

2003 S10 Starting Problem: My Son's 2003 Chevy S10 ZR2 Has An ...

2003 4.3 vortec problems

Society of Automotive Engineers, Inc. It was still going strong when their tow hitch parted while they were towing it behind their motor home - but that's another story. Align the pre-drilled indent hole in the distributor driven gear with the white painted alignment line on the lower portion of the shaft housing. Neighbors'd be pissed though if I started revving her 11:30 pm. The distributor was replaced and that's it! If left sitting for at least 24 hours it is hard to start it.

Next

Troubleshooting a Chevy 4.3 Engine

2003 4.3 vortec problems

The only other problem that I've encountered and very rarely is a rattling noise that occurs around 2100 rpm. It's almost reaching into the troll zone, bud. It wasn't until 1993 that the 4. My guess is that both of my rebuilt 4. Young learn more about Jesus. My truck took everything I dished out and came back hungry for more. I could be wrong though.

Next

General Motors 90° V6 engine

2003 4.3 vortec problems

Yours or any-one else's Like anything else, it only hurts when you get caught. If you can't fully seat the new distributor the alignment of the oil pump driveshaft remains a possible issue. Easy way to see if you have a problem is to clean a spot on the alt. Did I get screwed twice? But it is extremely serious that they don't mess around. Personally, I like to set the engine up on a mark provided on the base of the distributor. The new Vortec 4200 engine runs smoothly, quietly, and quickly all the way to its 6200-rpm redline.

Next