Thread: Car has been parked for an extended period of time...

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I did a search expecting this had been asked before, but I didn't find anything.

I recently picked up a '63 Merc with a 390 engine. The battery is dead, and the car has not been run in a LONG time (prior owner guessed at 6years or more).

The tank had previously been drained and a new carb installed so I dont think bad gas will be an issue.

So far, I'm thinking:

1. Change the oil
2. change the spark plugs
3. check all the plug/coil wires for damage or corrosion and replace as needed.
4. add a small amount of thin oil (I've read about Marvel Mystery Oil) to the cylinders
5. install a new battery, and check all existing wiring for damage/corrosion
6. when ready, remove spark plugs and attempt to slowly turn the motor by hand using a breaker bar.
7. check fuel filter and replace if needed.
8. add gas to the tank, and to the carb
9. install plugs and see if she will start.

I've also read elsewhere that priming can be done to get oil pressure up before rotating the engine allowing the oil to get everywhere it needed to be. What steps are involved with this on a 390?

Should I fill the carb with gas, or just the tank and use starting fluid in the carb?

I'm hoping I wont do something stupid that will cause me to have to rebuild the engine. I'm still debating a modern drivetrain, but I'd like the car running before I make that decision.

Oh and also ... anything I should be concerned with regarding the automatic trans if the engine does fire up? I dont just want to drop it into drive if I should be changing filter/fluids there too...

Thanks in advance!

~ Richard

They are gonna tell ya to pull the distributor, and run the oil pump with a hand drill.

Personally, I think that if you disable the ignition, and crank it for 30 seconds ( after adding a squirt of marvel mystery oil to the cylinders ) that you will be fine.

Originally Posted by firebird77clone

They are gonna tell ya to pull the distributor, and run the oil pump with a hand drill.

For anyone considering this, I say don't..let the distributor do the work - or at the VERY least be ***extremely*** careful with it.

I decided that since I had the intake off and could access the oil pump drive easier I'd go ahead and do this - it would also confirm the oil pump worked.

got it all connected fine and oil pumped up into the heads...mission accomplished!

...until the oil pump "driveshaft" (not sure what its called) stuck with me instead of the oil pump (it just sits in there??). For a bit, I thought I could get it with a magnet pen...then it fell completely down into the oil pan.

Sooo... several hours later I've also discovered there is no way to get the oil pan off with the motor still in the car. I've also discovered that the motor mounts in the car are shot. I've discovered there is a significant amount of sludge in the oil pan. Whee!! Are we having fun yet?

An old timer told me when I was a kid that "It'll stay in the pan and not hurt anything". What do the rest of the Club members think about that? Edd

hi i was just reading the posts..if the mounts are bad..why not just pull the engine and buy a gasket set (probally needs it anyway since the old dried up gaskets are bound to leak)..that way you can inspect the engine bearings for wear see how tight the rings are and look at the ridge to see if its worth trying to run the way it is.. clean it up and when it goes back together it will be good to go..no more guessing..plus stuff a new front seal in the tranny.. but im the kind that likes to be sure what im doing before i do it..and dont mind the extra work for the security of knowing what i have under the hood

Originally Posted by firebird77clone

Personally, I think that if you disable the ignition, and crank it for 30 seconds ( after adding a squirt of marvel mystery oil to the cylinders ) that you will be fine.

With the plugs out, but then I just use a light weight oil & put a couple of squirts in each cylinder & never have had a problem even starting a 1940 Chevy 6cylinder mtr that sat for over well over 30yrs outside......

Put whatever oil you'll be using in the cylinders & let it sit for a couple of days. Then try to turn it over w/the breaker bar. I normally turn the mtr over clockwise a bit & then turn it counter clockwise & continue to repeat but turn the mtr over a little more each time IF it will let you. Don't be afraid to add more oil before you first start it up. Once the mtr will turn over freely, then put the battery in & let the starter do the work. Plus it will push out any extra oil that maybe still in the cylinders. I'd use the starter to turn it over in 30 second shots a couple of times.
You could just use a gas can for a small fuel cell w/some hose going to the fuel pump but be sure to keep it far enough away from the carb incase the mtr backfires, you DON'T want to burn the car & yourself up. Personally I'd pull thetank & check it, nothing worse then fighting trash getting into your carb...joe

Thanks for the info guys. I haven't had the time so far to work on it that I wanted, but hopefully will do some this weekend. I post up to let ya know how it goes.

I fired my old '51 Chevy 235 up the week after I got it ( hadn't run in 8 yrs ).. changed oil and condensor, checked plugs and wires. new battery.. spun it till the oil preassure came up, then put a little gas down the carb and hit the ignition.. purred like a kitten, even on the old gas, and runs even nicer on good gas. brakes held preassure so I even took it for a short spin that day

well, I pulled the plugs and they were sorta rusty on the outside but otherwise spotless. Not sure the car has even been run on them.
put some mystery oil in the cylinders and let that sit. changed the oil (looked ok). I tried to turn the engine by hand using a socket/breaker bar but I couldnt seem to get it to budge. It had an old battery so I took it to get charged. Even after the charge, the battery was crap. I figured with the plugs out it might still crank slowly. No dice...

So I picked up a new battery and hooked that up... got the engine to turn, but its making an odd clank sound. Not sure if I should pull the valve covers and look for a stuck valve (maybe the piston is hitting it when it comes up?) or what else I should check. It seems to be coming from the driver's side rear. I'm HOPING that the prior owner wasn't withholding something...

Any input would be appreciated.

Originally Posted by gun4hire

well, I pulled the plugs and they were sorta rusty on the outside but otherwise spotless. Not sure the car has even been run on them.
put some mystery oil in the cylinders and let that sit. changed the oil (looked ok). I tried to turn the engine by hand using a socket/breaker bar but I couldnt seem to get it to budge. It had an old battery so I took it to get charged. Even after the charge, the battery was crap. I figured with the plugs out it might still crank slowly. No dice...

So I picked up a new battery and hooked that up... got the engine to turn, but its making an odd clank sound. Not sure if I should pull the valve covers and look for a stuck valve (maybe the piston is hitting it when it comes up?) or what else I should check. It seems to be coming from the driver's side rear. I'm HOPING that the prior owner wasn't withholding something...

Any input would be appreciated.

I guess my thoughts would be to STOP trying to turn the engine over with a battery. If it's making a clanking sound, something isn't right and continuing to try to start it could do serious damage to what may or may not be a good engine.... Seems it would be better to take the engine apart and check things rather then risk breaking a bunch of parts........

Oh yeah, another quirk is that the dome light/footwell lights come on right away when the battery is connected. Other than the door switch, I dont see where those are turned on? (I'm used to much newer cars - lol)

the headlight switch.. if you turn the knob all the way to the right, you will feel a click, and the domes will come on.. dash dimmers work by turning the knob also, but to dim them, you turn to the left

I did try that, but I will try again tomorrow. Thanks!

Yea, although I'm new to working on a car of this age I have been working on cars for awhile. I only cranked it a short burst at a time and stopped when I heard the noise.

One thing that I found odd yesterday when changing the oil was that the oil filter was bone dry. I'm wondering if the car was parked because of an engine problem (oil pump failure?) and the seller didn't tell me anything about it.

I really didnt want to put much money into the engine. I put new oil and replaced the filter anyway yesterday. It was only cranked a few times. If I drain the oil again and check the filter, shouldn't there be some sign of oil in the filter already?

Is there anything else I can inspect at this point before tearing down what I had hoped was a good motor?

Thanks again!

You should at least take off the valve covers and see if you have a stuck valve or lifter.