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    Stubborn To Start 1979 9.8

    Just a "long shot", have you change the gasket between the carb and the intake manifold? I have had this kind of issue with a Mer 200 20Hp. You have to set the gasket in the right way as there is a little hole in the gasket which is for the crank case pulses to drive the fuel pump. I suppose...
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    1986 Merc 60hp 3-cyl issue

    Check tell tale hose first if it is clogged. Not so uncommon if it has been running in salt water and if it has been sitting unused for some years. Then check impeller, if it has been sitting unused the vanes get stiff and as they are bend in the impeller housing they got settled and not flex...
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    Points for a 1975 Mercury 7.5

    The 7,5 Hp Merc 75 was introduced in 1969 and it had the Thunderbolt phase maker ignition system. It uses points in that system. In 1974 and up the 7,5Hp (Merc 75) and also the 9,8Hp (Merc 110) had Thunderbolt breakerless ignition system. In this case the year is not right, it might be a 1973...
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    1984 Merc 25 hp no spark

    Disconnect kill switch wire from CDI box and check for spark. If no spark then check output voltage from the stator. It should be 180VDC DVA (with a VOM that read DVA or with a DVA adapter connected to a VOM) or more. If the reading is 180VDC or more from stator the CDI box is bad.
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    kiekhaefer

    Nice engines, second year model 110 and with gear shift separate at the lower cowl. Pre 1962 there were model 100. 150, 200 and 250 and the gear shift was in the throttle handle. I have had a couple of those all models. Gear shift was designed with two springs, one inside the other. A bit...
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    old mercury

    Look for trouble at this one, old Merc.s did not have stainless steel drive shafts. Maybe the drive shaft has rusted in the crank shaft splines. If a saltwater engine most bolts and nuts are corroded. BUT check it out first and if a no saltwater engine it is rebuildable. Old Merc.s are really...
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    No fire on either cylinder

    Nice to hear it is up and running again. Mc Tool, the magnet strip sits all around the inner rim at the flywheel and not need to "timed" in. It is just for the stator to charge the capacitors in CD box and the battery. The "timing magnets" is in the center of the flywheel which is for the...
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    Shifting rod linkage getting stuck on transmission part can’t get out of forward

    Turn the brass connector 1/4 of a turn so the flat side is facing towards the impeller housing and so it not hit the casting when shifting gear. The screw should go through the connector in the shift rod grove and be tight so the connector do not turn.
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    557ha

    Is it back fire or sneezing? Generally setting for the air/fuel mixture screw is 1 1/4 turn out from seated. It should run with this setting but it can be set in a range of 1- 2,5 turn out. Most Chryslers will run desent with the screw set 1-1,5 turn out from seated.
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    557ha

    Do you have spark at both plugs? Does the spark jump 3/8 in or more with a spark tester? Back fire sounds like the HT wires are connected to wrong plug or the flywheel key is shared.
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    No fire on either cylinder

    Well that is you issue. The magnetic strip is loose. Some pics will confirm if it is the issue. It is suppose to be inside the flywheel attached to the inside rim. You can try to glue it back to the flywheel. Clean the surface of the strip and the flywheel very well. Coat the surfaces with a...
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    1992 Mercury Force 9.9 - No Thermostat? Help please.

    I am pretty sure your engine do not have any thermostat. Looking at your pic of the idle relief/tell tale hole, it is a "Force" but old Chrysler style back from the early 70.es.
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    No fire on either cylinder

    What ignition system do you have? Prestolite with two blue or black coils mounted at the block and one blue or black CDI box. As you says you have no spark at both cylinders it sounds like there is an issue with the CDI box or the stator. It been some years since I worked with the 50Hp but I...
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    Water pump

    Check Crowley Marine and go by year, not model. Same impeller for all 3 cylinder in those years. Part number for the impeller is 43026T2.
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    1978 700 series 70hp mercury high idle

    Check if you have an air leakage around the carbs mounting to the crank case (intake manifold) or at transfer passage cover.
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    Recommended DVA meter or DVA adapter for a Fluke digital meter

    If you are a bit handy do as Texasmark says, build your DVA adapter by your self. Google DVA adapter at internet and you will find many schematics for a DVA adapter. It is very simple, just a couple of components. I have made three of them by myself, works great. If you prefer to buy one, you...
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    Merry Christmas and Happy New Year

    Same to you and all others. Now I am waiting for the spring and summer. Really hate the winter, I am not a winter lover.
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    No fuel being drawn into lower cylinder Johnson 7.5hp

    Try to tig weld it or it is a junk power head. JB weld is not a longer solution.
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    Are Chrysler motors junk and to be avoided?

    Winnercougar74 that is a coil for a MSD ignition system? Not a coil for a regular auto system with points. Those regular coils has a higher secondary resistance then CDI ignition system. General about 10-12kOhm, CDI systems about 600-1000 Ohm. I think that coil you use will work perfect with the...
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    Are Chrysler motors junk and to be avoided?

    No you just can not remove the CD box and think it will run. The CD box contains some "heavy" capacitors, a SCR transistor and some transformers and resistors. The box is instead of the condenser in the regular old school system BUT it will be able to store much higher voltage. The points is...
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