C7 fuel prime

[FIRE UP]

Originally Posted by doorguy

Scott, thanks for posting the pics, much appreciated, sir. I'm heading to Henderson for xmas with my sisters family, but when I return, I plan on doing the same thing. I dislike being under pressure to hurry up and remove and install a new filter. With your setup, one can remove the old, have a beer, and re-install the new one w/o a worry.

Merry Christmas and Happy New Year Scott.

Exactly!
This is what has worked for me for several years now without one single fuel filter change related issue. If one is lucky (if you want to call this actually lucky) to have a primer installed on their engine, then a priming set of circumstances is for the most part alleviated. The hard part of this is, taking the time to actually install the valves without creating any issues. You too have a great Christmas Sir, and a happy new year.
Scott

[Douglee25]

This will also work.
Both eBay and Amazon have them...

https://www.ebay.com/itm/32349528849...3ABFBMqOjSpbtf

[KCFDCapt]

I changed the filters on my C-7 and could not get it to fire up. I installed the priming pump myself. It takes about 100 strokes to prime the system - fuel lines, primary and secondary filters. While I am at it, I lube the PacBrake too.

[the sights]

Originally Posted by KCFDCapt

I changed the filters on my C-7 and could not get it to fire up. I installed the priming pump myself. It takes about 100 strokes to prime the system - fuel lines, primary and secondary filters. While I am at it, I lube the PacBrake too.

The first thing I bought for my motorhome some 16 years ago was a CAT priming pump. I never had a problem.

[03Disc]

Originally Posted by FIRE UP

Hey Barry,
How ya doin' Partner? Hope all is well. I appreciate the nice comment(s) on my fuel valve setup. For those that have not seen it, here's what I did. As I explained earlier, I too had a *no start* situation way back several years ago when I'd finished changing my ONE AND ONLY fuel filter. The conditions were just right to cause my dilemma. The tank was less than 1/2 full. The coach was jacked up but, leaning downhill, towards the front.

When I broke the seal of the fuel filter by beginning to loosen it, that was all she wrote. From that point, because I'd broken the seal, all the fuel in that line simply flowed DOWN HILL all the way back to the tank. And, I'd made a CRIMINAL MISTAKE in reading CAT engine manual. They said to NOT PRE FILL the filter. WRONNNNNNNNNNG.

Annnnyway, after that horrible learning experience, here's my setup. I installed two, 1/4 turn valves, one on the inlet side and one on the outlet side of that filter. Now, when it comes time to change that filter, no matter if the tank is full, 1/2 full or near empty, and that coach can be at a 45 degree angle DOWNHILL, that full WILL NOT flow back to the tank! It stays right there, next to both of those valves. I prefill the filter, in all the outside holes, using a very, very large syringe. It's a fast (or at least somewhat fast) way to prefill it.

I then screw it on and, turn the valves. The engine fires right up without skipping a beat. I've thought about putting a priming hand pump on it but, you can't even fit a feeler gauge between the engine and the passenger side engine compartment wall in my coach. So, there's no way to even think about installing a primer. And, with the install of those valves, I have since not had any no-start conditions.
Scott

P.S. In the pics below, you see the layout of the parts I installed. The two darker colored fittings on the top, are the original inlet and outlet fittings on the fuel filter body. Everything under those two is new.
Scott

Hello Scott,

I'm going to build the fuel shutoff system this month. Just wondering how it has been working and would you change anything.
Thanks!
Mike 2003 Fleetwood Discovery 39S

[03Disc]

Originally Posted by FIRE UP

Hey Barry,
How ya doin' Partner? Hope all is well. I appreciate the nice comment(s) on my fuel valve setup. For those that have not seen it, here's what I did. As I explained earlier, I too had a *no start* situation way back several years ago when I'd finished changing my ONE AND ONLY fuel filter. The conditions were just right to cause my dilemma. The tank was less than 1/2 full. The coach was jacked up but, leaning downhill, towards the front.

When I broke the seal of the fuel filter by beginning to loosen it, that was all she wrote. From that point, because I'd broken the seal, all the fuel in that line simply flowed DOWN HILL all the way back to the tank. And, I'd made a CRIMINAL MISTAKE in reading CAT engine manual. They said to NOT PRE FILL the filter. WRONNNNNNNNNNG.

Annnnyway, after that horrible learning experience, here's my setup. I installed two, 1/4 turn valves, one on the inlet side and one on the outlet side of that filter. Now, when it comes time to change that filter, no matter if the tank is full, 1/2 full or near empty, and that coach can be at a 45 degree angle DOWNHILL, that full WILL NOT flow back to the tank! It stays right there, next to both of those valves. I prefill the filter, in all the outside holes, using a very, very large syringe. It's a fast (or at least somewhat fast) way to prefill it.

I then screw it on and, turn the valves. The engine fires right up without skipping a beat. I've thought about putting a priming hand pump on it but, you can't even fit a feeler gauge between the engine and the passenger side engine compartment wall in my coach. So, there's no way to even think about installing a primer. And, with the install of those valves, I have since not had any no-start conditions.
Scott

P.S. In the pics below, you see the layout of the parts I installed. The two darker colored fittings on the top, are the original inlet and outlet fittings on the fuel filter body. Everything under those two is new.
Scott

Hello Scott,

I'm going to build the fuel shutoff system this month. Just wondering how it has been working and would you change anything.
Thank you very much for posting this. It should really help.
Mike 2003 Fleetwood Discovery 39S