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DR_JOSH

az supporter
Joined: Wed Feb 17, 2010 10:30 pm Posts: 178 Location: Adelaide
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 Posted: Thu Apr 28, 2011 11:38 am |
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So I just bought myself a shitty LJ50, the guy said he drove it to where it's parked 2 years ago and never even looked at it since. Anything important I would need to do to the 2- stroker to prepare it for start up after sitting not run for 2 years?
I know with a 4 stroke you would, change oil, filter, plugs. Then disconnect dizzy and turn it over to get oil flowing through the system before initial start up. Would ou do something similar apart from changing the oiland what not
I just have my fingers crossed that it will start 
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hooki

az supporter
Joined: Mon Jul 21, 2008 11:30 pm Posts: 1785 Location: perth, WA
Vehicle: 85' LWB Sierra, 01' S15
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 Posted: Thu Apr 28, 2011 11:59 am |
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don't know much about LJ50's/2 stroke but maybe new plugs, fresh fuel, fresh coolant, fuel filter and clean out the oil container on the firewall.
_________________ 79' LJ80 (sold) :( 95' & 97' sierra (sold)
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FullyZooked

az supporter
Joined: Mon Oct 25, 2010 9:01 am Posts: 1009 Location: Bendigo
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 Posted: Thu Apr 28, 2011 2:05 pm |
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Good idea to take plugs out and poor a small amount of light oil In the cylinder bores ie 2 stroke oil. Best done with a turkey baster to squirt around the top of the cylinder and leave it sit for some time to cover the cylinder walls.
Crank engine with spark plugs removed for 5-10 seconds. This way you don't have to worry about dry rings running up the possible corroded cylinder wall. This is also good practice when storing any engine for long periods.
_________________ Built Suzuki's shall reign Victorious.
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303zuke

az supporter
Joined: Wed Aug 19, 2009 11:30 pm Posts: 2447
Vehicle: LJ50V, SJ70
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 Posted: Thu Apr 28, 2011 2:34 pm |
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Take the head off and check the cyl bores (10 bolts on top of head, plus one under the thermostat housing). Give a light swipe around the bores with some steel wool saturated with kerosene or 2 stroke oil. Scrub/chip out any coking of the head using screwdriver/stanley knife blade/ steel wool, being careful not to damage/score head casting.
Ensure the oil lines from the tank to the pump, and from the pump to the injectors are full of oil and have no blockages or large air bubbles. Bubbles won't stop the pump from working or priming, but it will be vital seconds of pumping no oil to the crank and cylinders. The oil in the lines moves quite slowly, and any large length of air will take many engine revolutions to purge. Use a Syringe to refill the lines with fresh oil.
DON'T use Aerostart or similar to try to fire the engine unless you have already had the engine running, it will be a dry mixture that won't lubricate the cyl or crank. Squirt some 25:1 mower pre-mix into the sparkplug holes to get it to fire up.
I guess the Golden Rule is it's better to have too much oil on start-up than not enough. It will only blow smoky exhaust for a little while, which is preferable to a seized engine or scored pistons.
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sideways

az supporter
Joined: Fri Oct 29, 2010 1:53 pm Posts: 5934 Location: Northcliffe, W.A.
Vehicle: LJs, Sierra, Jimny, Swift.
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 Posted: Thu Apr 28, 2011 2:47 pm |
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I'd rebuild the oil pump, here's a guide on how to.
Cleaning the carby would probably be a good idea. Get all of the old oil out the system, it was probably old shit when it was put in there years ago. Check all the oil lines. Spray some premix down the bores, turn it over with the coil lead off, reattach the coil lead then figure out why the bloody thing wont start.
Lucky bastard to have a LJ50V. :envy:
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3cyl
Joined: Tue Jan 29, 2008 10:30 pm Posts: 2054 Location: Ipswich
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 Posted: Thu Apr 28, 2011 6:50 pm |
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What 303 said is a bit of extra work but sound advice. Clean out oil in oil tank and new good oil for sure. B7HS spark plugs (not any old thing). Check the air filter element. Check throttle and oil pump cables that they wont jam and no slack in oil pump one. Some people run them off a tin of 25:1 2stroke oil to start with but warn the neighbors so they don't call the fire dept. Once it idles you can advance the oil pump by the lever to clear any bubbles from the lines (then change the plugs).
_________________ awesome only comes in 2 colours, camo & bare metal
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DR_JOSH

az supporter
Joined: Wed Feb 17, 2010 10:30 pm Posts: 178 Location: Adelaide
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 Posted: Thu Apr 28, 2011 11:21 pm |
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Nice write up 303, will be sure to follow it through.
I'll update this thread on how I got along once I pick it up on sunday
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3cyl
Joined: Tue Jan 29, 2008 10:30 pm Posts: 2054 Location: Ipswich
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 Posted: Fri Apr 29, 2011 4:06 am |
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If you pull the head off, I'm not sure if you can reuse the head gasket (I've always replaced mine) a full gasket kit is available from Repco. ACL GD720. Points are Bosch GD207.
_________________ awesome only comes in 2 colours, camo & bare metal
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steak_knife

az supporter
Joined: Fri May 22, 2009 11:30 pm Posts: 21335 Location: Smart Ass Island
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 Posted: Fri Apr 29, 2011 6:02 am |
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3cyl wrote: If you pull the head off, I'm not sure if you can reuse the head gasket (I've always replaced mine) a full gasket kit is available from Repco. ACL GD720. Points are Bosch GD207.
Is it a copper gasket????? 
_________________ I used to be indecisive,
now I'm not so sure.....
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3cyl
Joined: Tue Jan 29, 2008 10:30 pm Posts: 2054 Location: Ipswich
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 Posted: Tue May 03, 2011 10:01 am |
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Composite thing, well the newer ones are.
_________________ awesome only comes in 2 colours, camo & bare metal
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