stale fuel in a fuel injected motor

[mjoekingz28]

I know when I go to buy a carbureted bike that has sat, as most bikes do, that the first thing I will need to do is disassemble and clean all the internals of the carb.

What do you do with a FI that has sat untreated for years with old, stale gas in the system?


FWIW, my Dad has a 65 Mustang that hasn't left the driveway in over 5 years. Sometimes he will start it and while it runs fine, it will die if you let off the gas at low speeds. This, compared to a sports bike that has old fuel with ride just fine until you nail it, then it will spit and sputter.

 

[VicL]

I have purchased a couple motorcycles that seemed to have a lot of sitting time (very low miles). I normally just run the first tank or two with Seafoam in it -- doesn't hurt the injectors. I suppose if you prefer you can run something with PEA in it.

Vic

 

[Quest]

One strong does of PEA into the fuel tank, top up with the highest possible Octane pump gas and then run it close to empty before re-filling again.

So long as the gas still retains some of the aromatic hydrocarbons w/ enough octane to be burned w/o causing any drivability issues, the addition of PEA-based FI cleaner into the gas (top up with highest octane pump gas avail) shall get it going.

If, the gas is really, really stale, consider arranging for a complete draining and then refuel with good quality gasoline (doesn't matter about the octane in this case, so long as it meets/exceeds the bare min. the vehicle manufacturer recommends) and then add a bottle of PEA-based FI cleaner and then drive.

Q.

 

[Bluestream]

My daughter was given a 91 Lumina that sat for 2 years. It failed an e-test, and I tried Techtron, ethanol, and everything I could and it kept failing. Finally had a injector cleaning done by the shop, and it past the e-test just barely. A few months later I had some problems and took the 6 injectors to my buddy's fuel injection business to get them checked. 2 of them failed and he was not able to ultra-sonically clean them, so he gave me two used ones had sitting around. Worked great after that...