Chevy GMC 7.4L Misfire Wont Start and Lean Code Diagnosis 

I get the feeling they are just going to drive it till it kills someone.

@@ThecardoctorTV that is horrible. I really loved the video, I'm having some issues with my 454 k3500 hence why I'm here. However, that comment... just wow. So what kind of vibes did you get from the truck owner that would lead you to make that comment? I mean there are options for the owners. They could fix it, seems like issues that could be fixed offer several weeks and be do-able. They could off the truck on someone else, much the same is what happened to them (although not my choice) they could part the truck out, they could make a trade to someone handy looking for this kind of project.. Hell, they could surprise you and hire you to fix it, maybe they have the money to do that now, maybe they will just slap it on the credit card. I mean there are far better options other than driving it till it KILLS someone. I just didn't like that. Sorry, just my thoughts, the comment kind of shocked me, completely unexpected.

Indeed! Hydro boost leaking, upper and lower BJ’s outer tie rod ends, idler and pitman arms, complete exhaust system, injectors, regulator, upper and lower intake gaskets, fuel pump, valve spring, battery hold down, RR inside tire flat, oil cooler lines, ignition coil circuit code, etc. maybe a feature length film is in order. Haha. I don’t think they are going to do it. The cost exceeds the value I’m pretty sure. Sad deal.

LOL.

haha

I polished the radiator cap and placed it on a new truck for them.

Thank you!

That is an atlas brand from a long time ago. Don’t think they make atlas products anymore.

Have you tried the exhaust test yet?

The Car Doctor no, it has duel cats to single muffler and exhaust all the way back to end of truck. Would I notice it with full exhaust?

It was an old Atlas brand and I got it whena Chevron I worked at was closing. Haven’t seen one since but I’m sure they still make them.

Im having same issue with mine after doing same parts minus the TPS but also did new plugs, wires, distributor, and coil

@@cotytownes5353 real bummer I am having same issues I have a 2000 7.4l / 454 big block. L29sfi. I am just learning about. It's a 2000 GMC reg cab long bed. Came with a factory gas/ natural gas option . I ot it used aand they took 100 gal nat gas tank off and left the nat gas pump of whatever ontop or intake. It's losing power , higher rpm at lower speeds. Speedo is not accurate when trk is acting up, breaks aren't normal horrible gear like sound from top of fuel tank. Sounds like a wind tunnel in the intake housing but , the oil looks like new even at change time can anyone explain the problem? Can reset the brain so I get correct codes? It reads o2 bank 1. All the stuff happens at once . What's the connection?

Hahaha. Nice. I’ll have to recommend that upgrade to the customer. They have decided to drive it till the wheels fall off I guess.

Check the wires that run along the top of the motor in the back. Might be burnt up

Did you ever get it figured out?

@@rarefruit2320 second engine had low compression on three cylinders. Did a valve job and it got a lot better. Still chasing gremlins, but it runs and drives. Has an erratic idle (bounces continually from 800-1200 rpm), and doesn't make as much power as the port engine, but it runs, and stays running. Seems to starve for fuel, not sure why, everything is new, including the pump.

Agreed. I would have gladly kicked the tires for them but this stuff happens. Super sad deal.

Yes but have you ever seen a tech who sucked?

Low skills! Yes

Yes and also the fuel system leaks causes the same.

Yea hopefullly when i do the lower intake i want to do all the injecters and F.P.R other than that trucks a tank.

The overall condition isn’t good. Probably not worth fixing. They relied on someone who said they were a mechanic and helped them out with the purchase but I’m not sure they got sound advise. I told the owner I would check any future vehicle free of charge if they plan on looking for a replacement. Heartbreaking

It's a shame they didn't ask you from the start, they would have saved a packet if they payed you to do a general checkover of the heap... i mean vehicle, i got that right the first time lol. I found a family run motorcycle repair shop, i did not have the time to repair my machine and be at work at the same time. They were worth every penny, a decent repair from decent people :-). Much like yourself, you do a decent job thats affordable without the customer selling a kidney lol.

One in a million.

On my face?

The Car Doctor 🤦‍♂️😆 referring to the snow ❄️

I live in Alaska.

6000-7000 estimate of repairs. Super sad. Truck might be worth 3000 on a good day.

A bit more but a considerable savings but they don’t know how to repair their own vehicle. Probably 3000+ in parts at least. Don’t forget we live in Alaska. See a comment below for a short list of some of the problems I identified. It’s pretty bad

I know. I felt like I was surely going to get sucked up that exhaust pipe. That would have made for a real viral video!

Funny.

A real bomb might have been a better choice.

True that Bro. This is a recycler's wet dream. How's the weather in your neck of the woods? I notice you are getting bright sun again. It must feel good.

Yes, much more daylight and getting warmer. Fish will be running soon!!!