about a year and a half ago my car threw an OMP code. I'm just now getting the time to replace it and will have the new OMP on within the week. I haven't started the car in just over a year, so how worried do I need to be about it not turning over or needing a rebuild after having sat for so long? Aside from the OMP the engines in great shape, I rarely drove the car hard and kept up with all the maintenance for the last eight years that I've owned it. Thanks for the input guys.

 

i would drain the gas and put fresh gas along with fresh oil.

 

oil change is on the menu, the tank's already almost on empty so I'm just going to put 5-7 gallons of fresh gas in the tank and dump a bottle of fuel system cleaner in with it.

 

Drain the gas. Premix 1/2 oz oil per gallon in the gas.

 

Also, pull the EGI fuse and crank the engine over until you build oil pressure, then start the engine. Starting an engine bone dry is no bueno.

Should only take a couple of good cranks on the key to get the oil pressure to come up.

Dale

 

Every rebuilt engine should start on gas with proper premix in it as extra lubrication to last until the OMP lines get fully functional.

 

Sitting a year isn't that big a deal, but-

Don't put injector cleaner in!

The job of this stuff is to dissolve varnishes clogging your fuel injectors etc from evaporated gas.

Sounds good, but after sitting the gas in the tank has been evaporating and condensing inside the tank and you probably have more varnishes and gums in there compared to when the car was running.

The injector cleaner will dissolve/partially dissolve this stuff and send it through the fuel system where it will clog your injectors, fuel filter etc.

I would think the best thing is to fill the tank with fresh gas so there is more volume to dilute the nasty and run it through a couple tanks. Then slowly add in a little cleaner per tank and get it cleaned up more slowly.

Remember, you aren't taking junk of the fuel system when you use injector cleaner- just sending the junk through your fuel system/injectors and into your engine.

I once used fuel system cleaner on a Honda that ran fine, but had sat 30 years prior to the previous owner starting/driving it. I added fuel cleaner when I took ownership and it instantly gummed up all of the fuel system. I had to change out fuel filters, swap the tank and rebuild the carb.

Extreme example, but it made me think of how fuel system cleaner works.

 

Never actually thought about it that way, fuel system cleaner can wait a while. Thanks again for the advice guys, wouldn't have thought of any of these things.