Bucking while driving.

[BRimpossible]

Thanks I decided to hook up to 5 gal tank and put it on the bed.

[ORCoaster]

Yes better, much better to go with known clean fuel than route that dirty gunk around a bunch of times or pump it to another storage area.  Like it was said most fuel gets pumped through and is not used.  That is so the pump stays cool as it does its job. 

[BRimpossible]

Unhooked the gas tank and used the 5 gal tank on the bed for temporary but found out that the hard lines or rubber lines before the fuel filter is clogged. Basically the ip is getting foam fuel so I'll need to reroute the fuel line again front of the hard lines before the fuel filter to see if that works better. Just struggling to see how I can make this work for temporary. I use this pickup everyday and I don't have much free time to clean up the whole fuel system.

[vanbcguy]

Sounds like your fuel lines may be your actual issue then...  Not sure about the Caddy, the Mk2 had a water separator near the rear axle that caused a lot of similar problems...

You CAN "polish" the fuel in your tank if you can get your hands on a transfer pump and a good fine filter with a  proper water separator - something like a Racor or whatever.  Set up the pump to suck out the tank feed, route through the filter and return it to the tank, leave it running overnight for a few nights.  I'd feel pretty confident to use the fuel at that point provided you don't have any signs of algae in the tank.

[BRimpossible]

Well took off the inlet fitting that goes to the fuel filter, it was clogged with dirt. Cleaned it up and now I have pure fuel coming to IP from the 5 gal tank. I still think I'm gonna clean up the gas tank and blow air in the hard lines to prevent that from happening again. Thanks everyone for your help. I can drive the caddy and actually enjoy it again.

[mtrans]

Did you clean mash in tank?

[ORCoaster]

OK for now you are mobile and you know that there is crud in the tank that needs to come out.  I think I read that you are now using the original line for feeding the fuel filter.  That line is blown out clean and hooked to a temp 5 galloner?  That will get you by for ever if you don't mind the fuel risk of running out of fuel early, no gauge and potential for contamination. 

Find some time and pull the tank or pump it out and clean the inside with filtered fuel.  That gob of dirt in the inlet line is all the evidence you need to show you have a dirty tank. 

[BRimpossible]

Took the gas tank out, drained the fuel. Inside is very dirty and black on the bottom. Fuel sender unit has hard dirt built up on it even though it worked well. I'll buy a restoration kit for the tank so it will be clean again. Filter is black as well

[mtrans]

Great.

[fatmobile]

Did you clean mash in tank?

Good point
how does the intank screen look?

[mtrans]

By reading on forum I remove first time on deal with tank,many years ago.
Never see point for our motor,it`s more eazy to change fuel filter.
Just mesh crimped on metal pick up tube 8mm in case of my Fiat

[vanbcguy]

It's not uncommon for algae to grow in the tank. It makes a black slime that will easily block the pickup screen which is why folks recommend checking it out. Mk2+ have an access hatch to get at the pickup making it simple enough. Not sure about Mk1.

Sent from my XT1097 using Tapatalk

[ORCoaster]

On the MK1 you just pull up the rear seat and then undo some screws and tap the sending unit to release it from the tabs.  Then you wiggle out the sending unit and you have a clear view and about a 3 inch hole to work in.  Just don't do it with more than a half a tank of fuel as it may be up on the sender end if not level.  Besides you want to be low on fuel to get the most gunk out you can.  Filter with some of those 10 micron socks inside a PVC tube it works for veg oil. 

[Dubdoc]

When you swapped engines, what did you do with the exhaust system?