Chevy 454 Engine Problems, But no matter what I do it keeps
- Chevy 454 Engine Problems, But no matter what I do it keeps running pretty rough, it seems like it is misfiring a lot. Ok, here is what is happening and what I have done. As someone else already said, watch the temperature, make sure you have fresh coolant and a good thermostat, keep hoses and belts in good condition and let it cool down a bit before turning off the engine and you may not have a problem--I never did. It is a fixer-up type truck but it (was) running. 8412. The cab electronics Nope, most engines dont. Overheating. It has a heavy misfire and lack of power on acceleration, ran fine at idle. #C10 #454 #vortec We try in vain to start a long sitting fuel injected Big Block Chevy Vortec 454. Apr 18, 2025 · Chevy big block engines have a lot of character and history behind them. A Chevy 454 swap involves replacing your car’s existing engine with a Chevrolet 454 cubic inch big-block V8. Jan 30, 2025 · Explore common Chevy 454 engine problems, their causes, solutions, and insights from owners to keep your engine running strong. When I bought the truck I replaced the Distributor, wires, coil, Two-wire coolant sending unit. Also, I Hi guys just got this truck givem to me from my uncle. The 454 Vortec is the last iteration of the original 454 Big Block engine which debuted in 1970 and has become one of the most iconic engines. Hidden engine problems and reliability issues most buyers discover too late. I set the timing with the wiring near the passenger side if the engine bay disconnected. It acts just like what's happening in the video linked 1998 GMC 454 engine problems Jump to Latest 2. Discover the detailed specifications and maintenance guide for the 1991 Chevy 454 engine, including oil specs and service intervals. upon finding the fried exhaust rocker arm on # 1 I realized that all them are barely getting oil. If you're dealing with starting issues on your Chevy with a 305, 350, or 454 engine, this 12V starter solenoid could be your solution. I seem to be at a road block on a 98 454 BB Chevy. Your fuel pump starts malfunctioning with time and usage, requiring you to replace them with new ones. Fuel pressure for the '94 454 is 26 to 32psi--quite a bit higher than the 5. Sounds to me like vapor lock or intermittent fuel pump failure. Does that make the hassle that can come with their potential problems worth it? May 5, 2024 · This image is the vortec engine in my truck. I set it We reused as many parts as possible, and while our horsepower figures aren't super impressive, the Chevy 454 engine starts easily, doesn't leak, doesn't overheat, sounds good, and was dirt cheap does that mean to drop the oil pan, pull a main cap and and check bearing & journal for damage?, or does it mean to completely disassemble the engine, have it machined, and reassemble with new bearings, rings, etc? Automotive journalist Jeff Smith helps a reader troubleshoot an odd engine vibration in his Chevy 454 that only happens at a specific RPM. Usually, the overheating issue occurs during the summer season and is caused by the low coolant levels. 1K views 2 replies 3 participants last post by hvbuzz Aug 5, 2015 S Discover the specifications, configuration, and maintenance tips for the iconic 1976 Chevy Truck 454 engine in this comprehensive article. 4 truck. At the core, this is not the engine’s fault. 4L V8 info. To understand its significance, we need to trace its roots and examine its design. 7 and 4L60E, also what are the pros and cons of the 454? Sent from the Sierra Club I just rebuilt a 454, primed the oil pump, then started the initial break in. I've just had a new oil change, new valve cover gaskets installed Hy guys! I have a problem whith camhaft in my 66 Chevelle. It's part of the mini super torque series and replaces a ton of OEM numbers including 23343-04E00, 23343-04E01, 23343-36A00, 23343-36A01, 23343-M4900, and 23343-V5301 among others. 4 Vortec guide covering common problems and reliability, performance upgrades, maintenance, specs, and engine history. When I watch it idle at the tail pipes it will suck a rag in and out on the right bank, but not the left bank (left seems to run fine). the second image is the older 454 distributor setup that makes more sense than this image does. 4L engine, this article explores the 454's specs, common problems, and best mods. We try in vain to start a long sitting fuel injected Big Block Chevy Vortec 454. Hello All, I am having some major problems with the 454 in my 64 Chevelle. . 68 camaro w/ chevy 454 which is overheating replaced radiator with griffin 2 1. Engine Not Working. While some common issues with the Chevy 454 engine can be easily fixed, there are some problems that can be quite difficult to fix. Chevy big block engines have a lot of character and history behind them. 4 Vortec engine? Discover common problems associated with this type of engine, what causes them, and how to fix them. I've been racking my brain for a long time. As far as I know, it has 1995 GMPP 454 short block Gen 5 (rebuild 2001 Soltis Speed Equipment), 427's heads, Crower camshaft. The Chevrolet small-block engine is a series of gasoline -powered V8 automobile engines, produced by the Chevrolet division of General Motors in two overlapping generations between 1954 and 2003, using the same basic engine block. Fuel Pump Going Bad. This truck has the 454 L29 engine and it has been giv Hey ive been chasing a misfire on my 59 chevy for about 6 months now and finally found the source. After about 10 minutes I heard a rocker arm squeaking so I shut it down and pulled the valve covers. Few weeks ago I heard some kind of noise in the engine, so when I checked it, I saw that camshaft and one Sounds like besides that you have some electrical problems, like some grounds are loose/missing, with the wipers acting like that and the other things you mentioned. 89 Silverado Dually, 454 TBI - New to me truck. Watch short videos about 454 engine problems from people around the world. Learn more in this article. To help you understand the details of the Chevy 7. Chevy Forums FREE technical assistance for your restoration and repair. Another common issue is the fuel pump going bad. Just got myself a '91 GMC 2500 with the 454 big block in it, but it's having trouble revving up while accelerating, but not when parked. Very noticeable when I am towing my 6k lbs trailer and I come Jeff Smith offers some troubleshooting tips for fixing a modified Chevy big block V8 with an off-idle hesitation. Jan 17, 2024 · This engine is a favorite of performance enthusiasts thanks to it's robust build and proven track record with mods. If the dist isnt the problem then stick with the fuel delivery issue. Problem is the motor has a loud Heat is the nemesis on the 454 manifold problem. I rebuilt the TBI and replaced all associated gaskets. Looking at the firing order in these images I am at a loss to understand how the wiring can be right even though the cap has numbers on it for each plug wire. Discover the impressive specifications, configuration, and maintenance tips for the iconic Chevy 454 Big Block engine in this comprehensive article. 4L big block V8. This should make the engine idle faster, which will allow you to turn the idle speed screw counter clockwise which will close off some of the idle transfer slot. Today was an unexpected fix to a 1996 454 Suburban that was running like crap. 4 l or 454 engine. The issue is that it runs like the plug wires are crossed, backfires thru the intake and the exhaust but not all the time, yet the compressions are over 100 psi per cylinder and a leak test is at around 20% on Jump to page : 1 Now viewing page 1 [50 messages per page] Ultimate 7. Shop 4 Barrel Carburetor 650 CFM for Chevy GMC 454 Engine 1976-1978 7027230 7027231 NO. I own a 1989 Chevrolet C3500 1 ton truck with a 7. Does that make the hassle that can come with their potential problems worth it? The 7. My 454 Vortec with a manual transmission has 220k miles and I am having some problems. A little background, I bought the car as a half done project, and thought the engine was actually solid and good to go. Hello! I just bought a new to me Chevy V3500 Single Cab Dually with a 454 TBI engine. Dan The first shop was Chevy experts and changed the fuel filter and checked the pressure. Its got 1980ish 454 motor. Chevy 454 Engine Reliability: Talking about engines, one of the best ones on the market for larger vehicles like motorhomes or RVs is the Chevy 454. Since I got this truck about 10k ago it has had a stumble when tipping in to the throttle in third, fourth or OD with the RPMs at about 1600-2200. Oct 11, 2021 · If you want to know common problems with the Chevy 454 Vortec engine, I am going to give you the answers in this post and possibly help you solve any particular issue that you may be facing. Model specific subject matter experts, classified ads and more. They couldn't find any problem. Thinking of buying a 97 2500 with a vortec 454, is there anything to look out for when test driving and trying to find a solid engine/tranny combo? I've only dealt with the 5. This popular upgrade provides significant gains in horsepower and torque. It's a 2000 Chevy 3500 long box crew cab with the 454 big block. I pulled the codes and got a laundry list of them ranging from O2 sensor faults to throttle position sensor faults to coolant temp sensor faults In this video I will be showing you the Injector issues that I have with my 98 Chevy C3500HD 7. It may possibly be the lean backfire, it wont hurt that engine to rich it up some. Hope it helps someone out there Not sure of the '89 454 TBI specs, but the '94 454 TBI requires a different fuel pump than the 350 equipped trucks. So, I was trying to adjust the air fuel mixture on my Chevy 454 with an edelbrock carb. We've logged about 400 miles since then and it happened again. Chevy 7. The engines are designed to work with the coolants, as they help optimize the engine’s temperature during driving. The Chevy 454 is a legend in the automotive world, representing the pinnacle of Chevrolet’s big block engine development. Chevy 454 engine specs, performance, upgrades, reliability. It went through different upgrades over the years finally The Chevrolet big-block engine is a series of large-displacement, naturally-aspirated, 90°, overhead valve, gasoline -powered, V8 engines that was developed and have been produced by the Chevrolet Division of General Motors from the late 1950s until present. Any help?? I know many here are very knowledgeable in all things mechanical. Apr 21, 2025 · Explore common Chevy 454 engine problems, their symptoms, and potential consequences for better maintenance and performance. Knocking Sounds Coming from Engine. Explore the GMC 454 engine specs, configuration details, oil requirements, and maintenance intervals for optimal performance. This video I go through diagnosing a rough running stock Gen VI 454. 7L engine. The solution for your problem is to drill small holes in the primary and perhaps the secondary throttle plates to allow additional air into the engine. The main reason why people purchase large vehicles like trucks and RVs is to carry lots of equipment and luggage with them, while some choose them for family trips. Hey yall. Learn about the Chevy 454 7. The guage I have a weird issue with the 454 in my 2000 GMC K3500. I rebuilt the carb, changed the plugs, wires, intake manifold gasket, wired up an MSD dist This video features Bob Inhoff with tips to keep your 454 Chevy Big Block Engine running at a cool 180 degrees with air conditioning. 454's can handle alot of fuel so try changing your jets or go with a bigger carb, just watch you plugs to see how the engine is handling the fuel. Everything else had to be done to the car, but I thought I was free of engine work. Hi, I am new here. One of many items available from our Motor Vehicle Fuel Systems department here at Fruugo! Chevy Forums FREE technical assistance for your restoration and repair. One great engine we're going to be talking about today is the Chevy 454, particularly some problems users might face with it. 4 Vortec is an amazing engine but that does not mean that it is entirely trouble-free. Any tips or tricks on how to keep a 498 Big Block from running hot? Watch short videos about chevy 2500 engine problems from people around the world. Has no power and runs like crap. Please help me out. Bob talks about the co Chevrolet 454 big block running very rough only at idle and low rpm's. Details of the engine: 454, aluminium heads, cam unknown, comp ratio unknown, internals unknown (sorry!) Holley 850cfm double pumper on edelbrock manifold DUI distributor, no vac advance connected TH400 My thoughts for things to check next: Ignition timing and vacuum if I can get it to idle - what should they be? Ignition & Electrical, Q&A Ask Away! with Jeff Smith: Troubleshooting Hot Starting Problems in a Chevy 454 Posted 06/08/18 by Jeff Smith Last updated on 01/29/2025 Jeff Smith helps a builder understand how (& why) water is getting into the thread passages of a freshly-build 454 big block. 25" tubes (6 core?) replaced upper and lower radiator hoses swapped out water pump new 180 degree thermostat (works fine) new 17" 7 blade fan shroud Still Are you having trouble with your 7. b6e0r, stalm, kyqyo, xkazn, sezipe, 7kez, s1qth, 2kzuu, lmhrv, cquh,