Fuel vapor separator filter

[themechanic]

Use BLITZ20 Promo code for $4 off WIX 33041 at NAPA Online.

 

[DynaBro]

Next best thing to do is to steal one of the gas tank vents for a return and that can be bad depending on the year of the car and how well the tank vents

Previous owner did this to mine. Can you expand on what year cars this matters and why?

 

[Rishi]

It wasn't really a filter, although it looks like one. It was a fuel vapor separator that came on the 426 Hemi and 440 HP engines in 1970 and 1971. Its purpose was to prevent vapor lock. Vapor lock is caused by several factors, and not everyone will have the issue. They would sometimes get plugged, too. It also seems likely, over the years, it was mistaken for a filter and replaced. For those who do not experience a vapor lock problem, they're happy to leave it off.

It's discussed in the Fuel Pump section of the Factory Service Manual.

 

[turbine68rt]

It was a fuel vapor separator that came on the 426 Hemi and 440 HP engines in 1970 and 1971.

Also used on '68 & '69.

 

[hunt2elk]

It wasn't really a filter, although it looks like one. It was a fuel vapor separator that came on the 426 Hemi and 440 HP engines in 1970 and 1971. Its purpose was to prevent vapor lock. Vapor lock is caused by several factors, and not everyone will have the issue. They would sometimes get plugged, too. It also seems likely, over the years, it was mistaken for a filter and replaced. For those who do not experience a vapor lock problem, they're happy to leave it off.

It's discussed in the Fuel Pump section of the Factory Service Manual.

My 69 Charger R/T had one, so they must have been around before the 70 model year.

 

[DynaBro]

It also seems likely, over the years, it was mistaken for a filter and replaced.

This is exactly what I think happened with my 383-4v car. Not only did they re-route the return line to the short vent and cap the sender return nipple, but added this aftermarket three nipple contraption instead of an actual MOPAR fuel separator. When I redo all of the bad plumbing I am considering leaving one out entirely and seeing what happens.

 

[davek]

This is exactly what I think happened with my 383-4v car. Not only did they re-route the return line to the short vent and cap the sender return nipple, but added this aftermarket three nipple contraption instead of an actual MOPAR fuel separator. When I redo all of the bad plumbing I am considering leaving one out entirely and seeing what happens.

View attachment 1762807

Thats setup is crazy

 

[dadsbee]

Thats setup is crazy

Why, it's just a WIX return filter. Where it returns to is the crazy part.. LOL