2007 fuel pump

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Rudevette
Posts: 69
Joined: Fri Nov 06, 2020 5:58 am
Location: South Shore, SD

Re: 2007 fuel pump

Post by Rudevette »

I'm going to order the entire right side fuel pump module with level sensor in all likelihood.

-Justin
2007 Callaway Corvette convertible. 3LT, Z51, automatic, polished supercharger, engine covers signed by Reeves Callaway, Atomic Orange Metallic with tan top and interior.
Rudevette
Posts: 69
Joined: Fri Nov 06, 2020 5:58 am
Location: South Shore, SD

Re: 2007 fuel pump

Post by Rudevette »

I’m back,
I have been working on this fuel issue for in the hundreds of hours now. It is leaking down somewhere in one of the pumps or the crossover line. As anybody has ever gotten into this knows, no matter what people say you are not going to get that stupid crossover tube out of there without dropping the transmission and differential and suspension out of the rear. I am putting it all back together now and going to take it to the local Chevy dealer.
This fuel system is by far one of the top 10 engineering failures I have ever seen. Chevy must’ve got some budget praised engineers from Ford on this one. The part that really pisses me off is I replace multiple fuel pumps in my C-5 Corvette‘s, and it’s a simple half hour job. And in the late C-5 model they decide to go to the stupid top mounted fuel pump failure of a system. It is just unbelievable to me what a miserable disaster of a system of the fuel system on this car is.
Then to top it off because of the way the system is designed there is no way to find where it’s leaking down at. So the dealer is going to replace everything. Both pumps, the crossover lines, everything. My friends all give me crap about my 6.0L ford diesel, and now I have to tell them that my Corvette has far worse engineering than that thing does.🤬🤬🤬🤬 But this car does have about 30,000 miles on it, can’t expect em’ to run forever.

-Justin
2007 Callaway Corvette convertible. 3LT, Z51, automatic, polished supercharger, engine covers signed by Reeves Callaway, Atomic Orange Metallic with tan top and interior.
Rudevette
Posts: 69
Joined: Fri Nov 06, 2020 5:58 am
Location: South Shore, SD

Re: 2007 fuel pump

Post by Rudevette »

I’m back,
I have been working on this fuel issue for in the hundreds of hours now. It is leaking down somewhere in one of the pumps or the crossover line. As anybody has ever gotten into this knows, no matter what people say you are not going to get that stupid crossover tube out of there without dropping the transmission and differential and suspension out of the rear. I am putting it all back together now and going to take it to the local Chevy dealer.
This fuel system is by far one of the top 10 engineering failures I have ever seen. Chevy must’ve got some budget priced engineers from Ford on this one. The part that really pisses me off is I have replaced multiple fuel pumps in C-5 Corvette‘s, and it’s a simple half hour job. And then in the later C-5 models they decide to go to the stupid top mounted fuel pump failure of a system. It is just unbelievable to me what a miserable disaster of a design the fuel system on this car is.
Then to top it off because of the way the system is designed there is no way to find where it’s leaking down at. So the dealer is going to replace everything. Both pumps, the crossover lines, everything. My friends all give me crap about my 6.0L ford diesel, and now I have to tell them that my Corvette has far worse engineering than that thing does.🤬🤬🤬🤬 But this car does have about 30,000 miles on it, can’t expect em’ to run forever.

-Justin
2007 Callaway Corvette convertible. 3LT, Z51, automatic, polished supercharger, engine covers signed by Reeves Callaway, Atomic Orange Metallic with tan top and interior.
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BIGJOHN
Posts: 2779
Joined: Thu Aug 28, 2008 12:24 pm
Location: Ledyard, CT.

Re: 2007 fuel pump

Post by BIGJOHN »

Never let your fuel go below 1/2 for very long!
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SurfnSun
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Re: 2007 fuel pump

Post by SurfnSun »

Rudevette wrote: Sat Mar 19, 2022 4:21 pm I’m back,
I have been working on this fuel issue for in the hundreds of hours now. It is leaking down somewhere in one of the pumps or the crossover line. As anybody has ever gotten into this knows, no matter what people say you are not going to get that stupid crossover tube out of there without dropping the transmission and differential and suspension out of the rear. I am putting it all back together now and going to take it to the local Chevy dealer.
This fuel system is by far one of the top 10 engineering failures I have ever seen. Chevy must’ve got some budget priced engineers from Ford on this one. The part that really pisses me off is I have replaced multiple fuel pumps in C-5 Corvette‘s, and it’s a simple half hour job. And then in the later C-5 models they decide to go to the stupid top mounted fuel pump failure of a system. It is just unbelievable to me what a miserable disaster of a design the fuel system on this car is.
Then to top it off because of the way the system is designed there is no way to find where it’s leaking down at. So the dealer is going to replace everything. Both pumps, the crossover lines, everything. My friends all give me crap about my 6.0L ford diesel, and now I have to tell them that my Corvette has far worse engineering than that thing does.🤬🤬🤬🤬 But this car does have about 30,000 miles on it, can’t expect em’ to run forever.

-Justin
Not gonna lie, I just paid a shop to replace my fuel level sensors. I had no time or patience to take on that project. :-Laugh
Rudevette
Posts: 69
Joined: Fri Nov 06, 2020 5:58 am
Location: South Shore, SD

Re: 2007 fuel pump

Post by Rudevette »

My problem is time primarily. I have two of my work trucks to fix (one turbo replacement and one transmission replacement) and currently have my telehandler motor torn apart rebuilding it, and every one of my trailers needs repair again.
The c5 fuel pump arrangement was such a good system… then Chevy went and created this bastardizatiin of a fuel system. I just don’t get it.
Oh well. The dealer is 170 miles away. My wife is going to drop the car off on Sunday. We will see early next week what they say.

-Justin
2007 Callaway Corvette convertible. 3LT, Z51, automatic, polished supercharger, engine covers signed by Reeves Callaway, Atomic Orange Metallic with tan top and interior.
Rudevette
Posts: 69
Joined: Fri Nov 06, 2020 5:58 am
Location: South Shore, SD

Re: 2007 fuel pump

Post by Rudevette »

The dealer said the crossover line from one rail to the other was leaking on my car. If so, I feel stupid for not catching that.

How long should the pump hold pressure? Watch this video:
https://youtu.be/z1KLtznM41I

Is this normal?


-Justin
2007 Callaway Corvette convertible. 3LT, Z51, automatic, polished supercharger, engine covers signed by Reeves Callaway, Atomic Orange Metallic with tan top and interior.
Rudevette
Posts: 69
Joined: Fri Nov 06, 2020 5:58 am
Location: South Shore, SD

Re: 2007 fuel pump

Post by Rudevette »

UPDATE:

So my suspicion that the fuel pump had a problem was correct. Scott Rawling at Callaway confirmed that after watching the video that I posted above. The crossover line behind the supercharger between the fuel rails was leaking fuel. That was my fuel smell and some of the rapid leakdown and long crank to start problem. But even after I isolated the fuel system from the motor and tested the pressure the fuel pressure was dropping off too quickly after shutting the car off.

So, the dealership (Jerry's Chevrolet in Beresford, SD) got a new fuel crossover line for the supercharger from Callaway and installed that, they also dropped the rear cradle and put in another new driver side fuel pump and did an alignment. So that is two fuel pumps in 10,000 miles and the third one in the car so far (it has 30,000 miles on it right now). The first pump was the factory installed pump, the second one was installed in Florida shortly before I bought the car, the third one is right now. Jerry's Chevrolet is the local area Corvette dealership. They have a LOT of Corvette business through there and have a very good reputation in the Corvette world so I am so far feeling good about it. We will see..... the things I get into with this car seem to all be plagued with bad luck. I need to go pick the car up soon as possible but we have a hell of a winter storm blowing around here right now and it's a 150 mile drive home so I'm waiting on a weather window. Meanwhile they are keeping it inside at the dealership.

For those who are curious, the bill was right around $3200. Did I mention yet what an insanely stupid system the late C5 and C6 fuel system is? I can pull the entire cab off of my pickup, change a turbo, and put the cab back on quicker than I can change a fuel pump in a C6 Corvette. It's just plain miserably engineered.

The guys at Callaway are great. I bet the other aftermarket tuner companies don't have a guy sitting there with a list of every exact part that went into a car they built 15 years ago and are able to ship those specialty parts out immediately. And are able to help with tech support like they did with me. I mean hell, I build custom turbocharged snowmobiles and by the next winter parts and tech support are non existent with those.

-Justin
2007 Callaway Corvette convertible. 3LT, Z51, automatic, polished supercharger, engine covers signed by Reeves Callaway, Atomic Orange Metallic with tan top and interior.
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SurfnSun
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Re: 2007 fuel pump

Post by SurfnSun »

I'd find a good tuning/speed shop and compare the dealership prices. The dealer here wanted almost $4k for just the sensors....seemed like the "we don't want to do it" price to me.

I just got my timing chain replaced along with the oil pump, AC belt, and the fuel level sensors in both tanks done for about the same money.
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