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    DVA adapter vs DVA analog meter for sensor and coil wire testing

    DVA adapters allow you to accumulate peaks of AC in a capacitor after they are "line up" or rectified by the diode. Most meters can't catch the peaks so storing them in a capacitor as DC allows their measurement. common houseold AC around 120 volts actually has peaks much higher peaks...
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    DVA adapter vs DVA analog meter for sensor and coil wire testing

    dva adapter are just simple AC to DC rectifiers with a capacitor to help build up a peak DC voltage derived by storing the peaks of the AC signal . if both your DVA and the ESI version give the same results the problem is likley not the DVA adapters. Hoefully your meter is set to...
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    1975 Johnson 25 HP Not Running

    got gasket #40 in place also ? if not . crankcase vacum could be sucking air instead of fuel anything further would be beyond my limited skills.
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    1975 Johnson 25 HP Not Running

    so the pump works . sorry to ask can you confirm fuel enters the carb. ? to check open the bottom bolt to see if fuel drips out. if none then the inlet needles/float is not working properly. float adjusted level with carb bodey and on the right side ?? did you do a blow test on the...
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    86 Johnson gt 200

    if the motor stars and runs.... seems like the pack firing sequence is fine and sparks are happenning as they should from good coils. that brings you back to the above questions. the alternative is to change the pack hoping the "guy" will take them back if it is not the solution...
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    1975 Johnson 25 HP Not Running

    at the engine START position the plate limits the inflow of air leaving the crankcase vacum to be focused on pulling more fuel from the carb's upper idle section where 3 very small drip holes still allow fuel to be drawn into the engine to get it going the front plate is the choke...
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    1975 Johnson 25 HP Not Running

    small plugged up fuel channels in the carb will not allow fuel to reach the intake as vacum pulls or ... tries to pull in fuel. what cleaning did you do ... did you flush all fuel routes , and blow dry . the side channel leading to the top is very narrow make certain it is clean and...
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    94 28hp SPL Johnson

    parts list doesn't show one if the engine is run with the cowl on all the time chances of sucking in " something" would be a rare occasion. ...just keep mice away :) most carb I have worked on have no screen ... some old JW 3hp have them ... other have " air silencers ...but no screens
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    18 hp Johnson no spark

    unfortunately the only significant test to do with a VOM is for shorts dead shorts ... anything else is mostly meaningless in the real world of operation under a flywheel ! I also have a capacitance reading VOM... but I only use it o determine the uf value but not the operating...
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    18 hp Johnson no spark

    IF you have no accessto a Merc O Tronic tester here is a good video on building a inexpensive condenser test box... basically a AC voltage doubler/rectifier to generate a high DC voltage with a neon bulb similar to Mr.Mohat test box .
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    1976 Johnson 9.9 won’t “rev” when in the lake.

    thanks for pointing it out...! different but same basiscs I guess. ..coils wires condensers points
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    18 hp Johnson no spark

    exactly... as the condenser insulation between the 2 foils degrades the strong EMF kick from the coil can't be saved nor contribute to the generation of spark energy when it dumps back into the coil. Leakage can only be tested under high DC volage has explained in M.Moat's excellent...
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    cooling 1999 6hp evinrude 4 stroke

    does your pump have some kind of relief vent hole that if blocked can impair the pump,s operation.. not saying yours does but check anyway see warning on older style impellers you replaced the impeller (original) does that mean you replaced the "original" impeller or does it mean you...
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    18 hp Johnson no spark

    https://wrcoutboards.org/wp-content/uploads/2020/04/Part2_Condenser_Testers_And_Testing_Correctly.pdf
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    18 hp Johnson no spark

    take a ohms reading from plug boot clip to engine frame resistance should be 4-8 kohms depending of coils manufacturer
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    18 hp Johnson no spark

    a 1960 18hp magneto probably has 2 condensers bad. ... unless of course they were replaced since the 60s...even done so in the 90's 34 yearsago.... they could still be bad. proper testing of condensers requires high DC voltages to check from internal leakgae and such voltages are not...
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    Need help to id the motor

    I am always amazed at folks giving so little TLC to they investments glad you got it going... a coat of paint and it will look like new... outside :)
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    Need help to id the motor

    with the right mdl # you could try some salvage sites or put up a wanted ad on AOMCI site in Classifieds try e-bay ... somebody has a corpse
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    2001 evinrude 150 hp blowing fuse

    btw this...was a 15 year old post and should not be revived.... best to start a fresh topic.
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    2001 evinrude 150 hp blowing fuse

    hope this helps..and btw which specific fuse is blowing ?? on the ETEC version ex: 2004-2005 and up the main 10 amp blowing fuse syndrome is frequently and unfortunately a result of an EMM failure, that said the best thing to do is probably to scrutize the wire diagram and follow...
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