timing old merc help plzzzz

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slash123

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ok i have a 1979 inline 6 i replaced the stator ,triger , swith box , removed flywheel ,distrubtor , and replaced it all but dont think timings correct dont have a manuel used this forum and utube to walk threw most of it and common since but its out time it will start and run but after it runs for like few minutes and i kill it try restart emedatly it kiks back couple times then fires up but the question i have is the pully on the distributor has a arow on it what do i align it with to make sure my timeing inline with number one piston...... any help on this would be most pleasent......thnks in advance....
 
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Vision91

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Re: timing old merc help plzzzz

look for one of my posts it has a link to a partial manual a guy on here sent to me it should help
 
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slash123

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Re: timing old merc help plzzzz

if its the i think it is that link is dead now ....o.0 i just tryed it twise
 
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b0horman

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Re: timing old merc help plzzzz

you need to move the flywheel to 2-4 BTDC (should be 2 black marks on timing sticker) either on flywheel or cowl housing depending on model. once you are there you need to point the arrow at the far right alignment mark on the same timing sticker. you will need to take the timing belt off and turn the distributor gear to align it.
 
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slash123

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Re: timing old merc help plzzzz

iits a 1979 merc 115 inline 6 cyl it has all marks in fly wheel and a arrow on distrubtor gear and a nub on the distributor gear too....
 
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Vision91

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Re: timing old merc help plzzzz

ok sry about that didnt relize it was dead i can send you the partial manual that covers this section by email
 
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Chris1956

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Re: timing old merc help plzzzz

Vision, You might pick up a service manual. Here is the basic procedure.

Remove spark plugs 2-6, and replace them into plug boots and ground all electrodes to block.

Remove spark plug 1 and turn flywheel to top dead center. Look at timing pointer. If it is not close to TDC(off by 45* or more), remove 8 outer flywheel bolts and rotate outer flyweel until pointer is close to TDC. Measure to piston top thru spark plug hole. Add .464" to this measurement

Now turn flywheel CCW a 1/4 turn. Now turn flywheel until piston is .464 BTDC, and adjust timing pointer to read .464 on flywheel decal.

Turn flywheel to TDC and remove distributor pulley cover. Make sure cast arrow is pointing at dot or punch mark on flywheel.

Install spark plug #1 and crank motor. With timing light set throttle to 4-6* BTDC timing. Carbs should just be ready to open. If not loosen 2 small bolts on underside of middle of distributor and rotate brass collar until carb is just touched by distributor fingers. Tighten bolts.

Set throttle to max and crank motor. Adjust max spark advance screw until max timing is 21* BTDC. Tighten nut.

Adjust throttle stop so it stops throttle just before carb are jammed open. Install spark plugs and start and warm motor. Adjust idle mixture in gear ideling in water.
 
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slash123

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Re: timing old merc help plzzzz

thnks each every one of youons im gona go use these tools of knowlege u have given me see how we far....
 
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Vision91

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Re: timing old merc help plzzzz

thats the same part of the manual i have which did help a lot...took a few to understand the timing and adjustments since it was my first time working of a marine engine and not a diesel engine im a 91B (vehicle mechanic) in the army
 
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slash123

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Re: timing old merc help plzzzz

omg my timing sticker missing the 3 little dots on the end
 
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Chris1956

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Re: timing old merc help plzzzz

Slash, It could be one dot, or a punch mark in the flywheel metal.
 
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slash123

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Re: timing old merc help plzzzz

well been couple days been working and doing hunny due list laying hardwood floor for the wife but maneged to tear down the motor a little found 2 punch marks on flywheel one for .464 mark and one for the rotor bug pully got my number one piston to tdc and rolled it back .464 btdc and it is like 1/4 off cant seem to get it dead on ....
 
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slash123

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Re: timing old merc help plzzzz

well the gods are against me today after working hard on floor for wife i worked on motor a tad had plugs out it was fixing to start raining so i got in a hurry to put plugs back in so water wouldnt get in clyenders and grab a plug that was out my daughter car laying on my boat mixed in with rest of my plugs and crunch i i spun it into my number one piston that was tdc and all the porcelune broke in the center fell into my cylender and twistewd a circle into the top of my piston ....omggggg omg sooo anyone got any sugestion on a quik fix of this without removing the head ..... any at all
 
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Chris1956

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Re: timing old merc help plzzzz

Sure, Remove the transfer cover on the starboard side of the motor and you should be able to reach in with a needlenose plier and grab it.
 
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slash123

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Re: timing old merc help plzzzz

well finaly i got to go out and play with motor today i put timing light on it while it was ideling and the pointer is on number one is firing about 1/4 away from .464 ...something a miss there ? i dono seems to be to me but it idels fine what do i need to do ? tdc shows tobe 45 degrees to the right if ur faceing pointer
 
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slash123

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Re: timing old merc help plzzzz

slash123 said:
well finaly i got to go out and play with motor today i put timing light on it while it was ideling and the pointer is on number one is firing about 1/4 away from .464 ...something a miss there ? i dono seems to be to me but it idels fine what do i need to do ? tdc shows tobe 45 degrees to the right if ur faceing pointer
Click to expand...

ok day 2 went out doble checked tdc correct called a friend he said sometimes the olderer merc arnt always like they say he said set the nub a little off from the other nub on the disstrubter so i did about a quater to theright now in idel it firing 4-6 btdc awsome ......... but on the last test i did ( in a test tank ) instead of water steam came out the taltail not sure if that ok or not didnt run long got scared but thats a new inpeller maybe it just didnt run long enough to get water built up but steamm o.o ..... what do yall thnk?
 
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Chris1956

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Re: timing old merc help plzzzz

Steam is not good. That motor should run dead cold at idle. Replace the impeller, wearplate and two gaskets.
 
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slash123

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Re: timing old merc help plzzzz

Chris1956 said:
Steam is not good. That motor should run dead cold at idle. Replace the impeller, wearplate and two gaskets.
Click to expand...

ok so heres the deal though i replaced the whole pump last year and never put it in the lake but i went head put in a another impeler yesterday seems better but it not strong and steady it pees some stop sec pees more stops sec then pees more is that ok ? i bought this thing last year havent got to enjoy it at all yet grrrr ive put new stator,triger,cdi module,rectfier,waterpump, and now nother impeler in past 8 months, one good thing though had it at the marine shop they did compresson check on it sayed it was all good lol then they said they would finish repairs for 1800 lol ....
 
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