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Old 02-07-2014, 12:08   #1
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Engine Sitting, First Start Procedures

Hello,

I purchased a 2GM20F with 0 hours on it. The only catch is it is 13 years old and has been sitting in storage since '01.

I am curious if I should do anything in particular when starting it for the first time this weekend? Do I need to lube or oil anything in particular?

I will be bleeding the diesel lines so I don't expect it to fire right off the bat. Hopefully the oil pump engages before I get fuel to the cylinders.

Thanks!
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Old 02-07-2014, 12:29   #2
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Re: Engine Sitting, First Start Procedures

I'd definitely check to see if the impeller is still flexible and wont crack apart when turned on.

I'm sure there are other things you should look for, but the impeller thing bit me in the butt when turning on an engine that sat for a long time.
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Old 02-07-2014, 13:37   #3
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Re: Engine Sitting, First Start Procedures

I also would be sure to turn it over by hand (with a wrench on the fly wheel nut) to be sure it turns easy. I would also have the fuel off when first spinning it with the starter. And I would do that fuel off spinning a few times for 20 seconds to get the engine oil circulated.
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Old 02-07-2014, 13:49   #4
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Re: Engine Sitting, First Start Procedures

If the engine is in a boat, turn off the raw-water sea cock until you are ready to start it for real. If the engine is hard to start or won't start, excessive cranking of the engine can cause water to be sucked into the cyclinders via the mixing elbow. Water in the cylinders will result in hydro-lock of the engine, which could cause extensive damage (water doesn't compress so something has to give).
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Old 02-07-2014, 13:54   #5
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Re: Engine Sitting, First Start Procedures

yes, shut the water valve, good catch!!!!!!!!!!
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Old 02-07-2014, 13:59   #6
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Re: Engine Sitting, First Start Procedures

Thanks for the replies so far everyone.

Are you still at risk of sucking water in through the mixing elbow even if you have a siphon break installed?
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Old 02-07-2014, 14:10   #7
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Re: Engine Sitting, First Start Procedures

In addition to the good advice so far, after all those many years there is a good chance that the rack on your injection pump is stuck. That could lead to a runaway engine if it is stuck in a high fuel position. How do I know this????

I can't help you with checking that out, but get someone who can.

And open the compression release levers before you start. Rotate the engine with a wrench by hand and then with the starter until the low oil pressure light goes on. Then prime, and try to start. After it runs for a few seconds, open the raw water seacock and confirm water flow.

And closing the seacock until it really starts has nothing to do with the siphon break. It has to do with the water lift muffler filling up with seawater with no exhaust to blow it out.

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Old 02-07-2014, 19:34   #8
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Engine Sitting, First Start Procedures

I'd remove the injectors and put a teaspoon of oil in the cylinders, they have to be bone dry now, leave the injectors out and spin the engine with the starter, this will pre-lube everything else with no compression loads and expel any excess oil in the cylinders. Have the intake open, no silencer or air cleaner and a piece of wood to place over the intake tube, if you get a run away starving it from air will shut it down. Don't think you can shut it down by placing your hand over it, you might, but would likely be injured.
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Old 02-07-2014, 19:53   #9
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Re: Engine Sitting, First Start Procedures

I did not see it stated-

was the oil changed?

Same for transmission .
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Old 02-07-2014, 20:12   #10
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Re: Engine Sitting, First Start Procedures

Don't just check the impeller, change it.
Change the oil.
Remove the injectors.
Spray a mist of oil into each cylinder as you turn it over by hand.
Spray when each piston is at top and at bottom of its travel.
Yes you can flood the engine by cranking it over even with an anti siphon valve.
Crank the engine over until you have full oil pressure.
I would suggest that you remove the valve cover and oil the cam shaft lobes and gear but I wont because you probably wont do it anyway.
Install the injectors and bleed the engine.
Cranking the engine with full compression for more than one cycle at 20 seconds could cause the starter motor to over heat. Leave plenty of time between each cycle for the heat to dissipate.
After starting check everywhere for oil leaks.
Good luck ... 13 yrs is a loong time.
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Old 02-07-2014, 20:38   #11
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Re: Engine Sitting, First Start Procedures

Quote:
Originally Posted by sideyb View Post
Hello,

I purchased a 2GM20F with 0 hours on it. The only catch is it is 13 years old and has been sitting in storage since '01.

I am curious if I should do anything in particular when starting it for the first time this weekend? Do I need to lube or oil anything in particular?

I will be bleeding the diesel lines so I don't expect it to fire right off the bat. Hopefully the oil pump engages before I get fuel to the cylinders.

Thanks!
It's hard to know what you have done and haven't done with this engine prior to putting it in the boat. also it is unclear if and or how it was "preserved" for storage.

Taking a stored engine back to service would have led to a lot of things on the bench prior to installing -

- complete check of all the rubber components
- replace impeller
- remove injectors and eyeball the cylinders for corrosion
- remove the valve cover and do the same
- new thermostat
- heat exchanger inspection
- light oil in cylinders (not too much lest hydraulic lock)
- replace oil filter and service oi
- change fuel filter
- provide a clean fuel source to the pump
- Spin engine by hand/drill adapter on bench to pre-oil the system
- observe fuel from injector supply lines - fuel system ops check
- remove fuel supply
- reinstall injectors
- turn engine by hand - confirm compression exists
- everything ready to go except coolant.

Install in boat -

- Service coolant - be prepared to top off when engine fires and bubbles are consumed.
- Bleed fuel system
- Raw seacock closed - prepare to open upon start or shut down after first start and open if seacock is in a dangerous place to operate when engine running

- start engine

Whether or not the engine starts should not be in doubt unless injector timing

All the bench prep can technically be done on the boat but it would have been easier on the bench.
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Old 02-07-2014, 21:13   #12
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Re: Engine Sitting, First Start Procedures

This is really good. Let us know how you do. I have a similar engine, but it is 20 years older than yours (sitting in a crate in garage on a relative's farm for the last 30 years).
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