75 Royal monaco fuel tank/emissions system

Matt N

Matt N

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Hey everyone this is my first post, I'm glad I found this site.

I have a 75 monaco and the fuel tank is a rust bucket, and is leaking, and the fuel lines are shot and need replaced. I installed an edelbrock performer intake and 600cfm crb on the car just in case thats pertinent.

my two questions are,

1) Is there anyone who sells a replacement fuel tank for less than $300

2) How should I hook the gas emissions system back up, considering the Edelbrock carb does not have a vacuum post for the canister? On the tank, there appears to be the main fuel line and return line on the side mounted on the "sender unit", and lso a smaller diameter line that goes to the top of the tank.

Any help would be appreciated,

Thanks in advance,
Matt
 
1. Nobody.
2. Remove the charcoal canister, leave the return line from the tank to the ex-canister uncapped, and use a vented gas cap to prevent vacuum lock in the fuel line.
 
To expand on what my good friend Commando said. But you do have two choices Matt. Pop the $300 on ebay and start fresh or find a good radiator shop that can actually fix stuff, and have your tank boiled out and repaired. and that's the cheapER way if you can find that type of radiator shop, Jer...BTW we need pix
 
Thanks guys.

There are still a couple actual radiator shops here in Columbus so I will call tomorrow and get a price. If it's any more than probably $100.00 I might just bite it get a brand new one that I'll never have to worry about again.

One last question, for the fuel lines, is it really important to also run another return line along with the fuel line, or is just a single fuel line to pump--->filter-->carb setup good enough?

Heres the beast.
Monaco2b.jpg
 
My '75 Monaco only has 2 lines to the tank. The main fuel line, and a vent line (goes to the top of tank). Should be fine with only the main supply line
 
The Spectra piece is pricey, but looks like a great unit! I picked one up a year or so ago. Its waiting to go in the car. Deff worth the $$ in my opinion.

 
Just to butt in with a thought. Do they have emissions inspections in your area and does a car that old still need to get one? If so, defeating the canister could cause you to fail visual inspection. Otherwise... go nuts.
 
Thanks Monaco75. I was browsing through your photobucket Monaco restoration pictures, looks like you put an absolutely insane amount of work into it, that's awesome.

I probably will buy a new tank because the old one is likely beyond repair.

I don't know this for sure but I suspect that my car was put together under California nazi emissions standards and that is the purpose of the third fuel line. My sender unit is of this type, and of course I still have the smaller vent line on top...

sendingunit.JPG
 
cantflip said:
Just to butt in with a thought. Do they have emissions inspections in your area and does a car that old still need to get one? If so, defeating the canister could cause you to fail visual inspection. Otherwise... go nuts.
Click to expand...

Ohio doesn't have emissions tests (smog tests), atleast they didn't about 8 months ago when I had the title transferred for my Buick.

I was only concerned because I'm under the assumption that having a return line in your fuel system can be partially responsible for better fuel economy, but I'm kind of learning this stuff as I go.

p.s. I'm pretty sure in emissions nazi states (like California) you can still leagally drive cars with zero emissions systems but ONLY if it was originally costructed that way, and probably with some extra fees no doubt.
 
I don't have enough technical information to accurately comment on your return line. The evaporative emissions system (charcoal canister) is designed to prevent fuel from evaporating to atmosphere... its unlikely to change fuel economy at all.

Emissions laws are federal and apply throughout the country, California emissions started earlier and are more severe... if you don't have inspections, you're not going to get caught. If you ever sell to somebody in emissions area, that could raise a liability issue.
 
cantflip said:
I don't have enough technical information to accurately comment on your return line. The evaporative emissions system (charcoal canister) is designed to prevent fuel from evaporating to atmosphere... its unlikely to change fuel economy at all.

Emissions laws are federal and apply throughout the country, California emissions started earlier and are more severe... if you don't have inspections, you're not going to get caught. If you ever sell to somebody in emissions area, that could raise a liability issue.
Click to expand...

Yeah I would definitely stay away from those areas. I suppose it wouldn't hurt to leave that stuff be. If an inspector saw a vapor canister and lines going out of it he would probably figure everything's ok on the car. Not like I have a computer on the car to tell him anything different.
 
I don't know about your state....

As many times as I have had emission tests done here in Maryland...they never ever asked me to open the hood on any car or truck.
 
1978 NYB said:
I don't know about your state....

As many times as I have had emission tests done here in Maryland...they never ever asked me to open the hood on any car or truck.
Click to expand...

Really? That surprises me, I did my last one in 1995 PA... Florida doesn't have any inspections. The way I understood it PA did a full IM240 on the eastern side, and a 2 state no load version on the western side in 96... I haven't kept track of all the details, but hear they got more strict on emissions enforcement and a lot softer on the safety program since then.

Emission inspection programs are state/county level and will vary, the EPA held back highway funds until the states worked out something with them back 96... its too crazy to even want to keep up with more than the federal guidelines and what ever your local requirement is. The more recent trend has been to lighten the load on testing centers or eliminate them entirely... but that is completely different around the country too.

My caution is based on whatever you have to do locally with your car, and many places that do test don't go back this far anymore. Also if you sell and the buyer goes for a test that fails, they have federal anti tampering laws backing them up... it would be a matter of state car sales laws and small claims court backing them. I know the EPA will help put some pressure on a dealer who sells one, even unknowingly that has been tampered (catalysts in particular). The rest is lawyer territory. Simple advise, private sales on an "as is" contract are usually safe. Most of this stuff was done to control scumbag used car dealers. If the catalysts are missing there maybe enough value/legal support there to come after you.
 
cantflip said:
Really? That surprises me, I did my last one in 1995 PA... Florida doesn't have any inspections. The way I understood it PA did a full IM240 on the eastern side, and a 2 state no load version on the western side in 96... I haven't kept track of all the details, but hear they got more strict on emissions enforcement and a lot softer on the safety program since then.

Emission inspection programs are state/county level and will vary, the EPA held back highway funds until the states worked out something with them back 96... its too crazy to even want to keep up with more than the federal guidelines and what ever your local requirement is. The more recent trend has been to lighten the load on testing centers or eliminate them entirely... but that is completely different around the country too.

My caution is based on whatever you have to do locally with your car, and many places that do test don't go back this far anymore. Also if you sell and the buyer goes for a test that fails, they have federal anti tampering laws backing them up... it would be a matter of state car sales laws and small claims court backing them. I know the EPA will help put some pressure on a dealer who sells one, even unknowingly that has been tampered (catalysts in particular). The rest is lawyer territory. Simple advise, private sales on an "as is" contract are usually safe. Most of this stuff was done to control scumbag used car dealers. If the catalysts are missing there maybe enough value/legal support there to come after you.
Click to expand...

I took my 07 Titan for emission test and didn't have the exhaust from the muffler back which is about half the length of the truck. They didn't find it missing, didn't open the hood, didn't test the gas cap. just plugged it in....no codes....passed. Drove away. That's the level of experts you get for $10 an hour. I put a Flowmaster catback system on it a week later.
 
1978 NYB said:
I took my 07 Titan for emission test and didn't have the exhaust from the muffler back which is about half the length of the truck. They didn't find it missing, didn't open the hood, didn't test the gas cap. just plugged it in....no codes....passed. Drove away. That's the level of experts you get for $10 an hour. I put a Flowmaster catback system on it a week later.
Click to expand...

Thanks, now I understand. The programs are run very differently as you go around the country, I am always interested in how things are done where ever because it relates to my industry. The federal guideline doesn't change, but local enforcement and procedures sure do.
 
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