Can a GM 454 back fire under load?

Can a GM 454 back fire under load?

I have a 95 Bounder 28 with GM 454. I bought it used and discovered too late that it back fires under load during a hill climb. If I back off it stops but I also end up dropping down to 40-45 mph at times.

Is the GM 454 a throttle body injection?

I’mpretty sure Tim’s is a throttle body injection like mine. These look like a carb but are far from it. For that period it was GM’s answer to a carb and I think they worked better than a carb, but they came with their own problems. I’m having problems with my engine which is a gen 5 454 tbi 220 model made in 1992.

Can a 454 be used as a diesel?

While you are correct the 454 won’t have the torque of a diesel, it sounds like Dave and Bea have a problem. We had a 91 Pace with the 454, and we could still do 45MPH over the Tehachapi pass in California–a pretty steep, long hill. Sounds to me the engine just needs a good tune-up as suggested by the other posters.

What makes a Class A motorhome go bad?

It was going along fine at 70 mph on the flatlands and we were so proud of it, but once it started getting hilly we were driving on the shoulder and had to slink down in the seats so no one could see our faces. This vehicle wasn’t used for a year by the last owner, and I was suspecting it may be something as simple as a dirty fuel filter.

Is the GM 454 a good gas engine?

The GM 454 (7.4) is a great engine. The basic engine is a real workhorse. The following is just my opinion. I feel that any coach up to 34′ is just about the max for a gas engine. 37′ might be a little too much for the 454.

I have a 95 Bounder 28 with GM 454. I bought it used and discovered too late that it back fires under load during a hill climb. If I back off it stops but I also end up dropping down to 40-45 mph at times.

Are there any problems with my 454 c.i.engine?

The only problem I’ve had with mine is a small power steering fluid leak, which I plan on fixing this winter. Actually, the formula for descending any grade is to downshift until you find a gear that will hold your speed in EQUILIBRIUM– you are neither accelerating nor decelerating WITHOUT USING YOUR SERVICE BRAKES (brake pedal).

Can a 454 take you on that trip?

Can a 454 take you on that trip– absolutely. The only HAVE TO other than routine maintenance is to change the BRAKE FLUID. Old/hydrated brake fluid boils at under 300 degrees F– new fluid around 500 degrees. Loosing your brakes in the mountains is not when to decide to change the brake fluid.

Do you need a starter in a Chevy 454?

The Chevrolet 454 engine is a powerful engine capable of horsepower and speed. This large engine needs a strong starter to engage the flywheel and turn the crankshaft. The 454 engine uses an electronic ignition that activates once the key is turned.

What kind of engine does a Chevy 454 have?

The Chevy 454 first hit the market in the 1970s. The 454 is a big-block carbureted engine found in most older model Chevrolet cars and trucks. The engine uses eight cylinders to provide high-end torque and speeds. The combination of larger bore and eight cylinders equates to very poor gas mileage.

How long does it take to start a Chevy 454 engine?

This large engine needs a strong starter to engage the flywheel and turn the crankshaft. The 454 engine uses an electronic ignition that activates once the key is turned. A faulty starter can be replaced in thirty minutes, especially on the 454 where there is plenty of room to maneuver around in.

Is the 454 engine a good RV engine?

The 454 is a great engine. Our 1989 Southwind (454 engine, 32′) made the trip from Denver to the Grand Canyon just fine last year and has been very reliable for the last 3 years we’ve owned it. We love the coach and don’t think we need to upgrade anytime soon.

What kind of air cleaner does a 454 engine use?

I would also go to a Banks exhaust and KN air cleaner if I still had the coach. The 454 is a great engine. Our 1989 Southwind (454 engine, 32′) made the trip from Denver to the Grand Canyon just fine last year and has been very reliable for the last 3 years we’ve owned it.

Is there an ECM on a 1993 GM 454?

There is No true ECM on the 1993 454. There is a mechanical advance spring set up under the distributor cap. Also, unless the engine system has been updated; there is a vacuum advance unit attached to the metal base under the cap. The top item is to replace ALL the vacuum lines.