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Recent content by qhn

  1. Q

    Yamaha ProV mistereous issue

    1988 Prov150hp with 110psi on all 6cyl, good spark, clean carbs, starts nice, idles great, planes out powerful, runs warm, but vibrates and bogs down to trolling speed, nearly cutting off, put back to neutral in less than 5 sec and it's all good again for a few miles more. What fixes itself in...
  2. Q

    Expert advice needed on 200EFI Merc

    Looking for Chris at Dockside Marine- the Merc Master's advice please: 2001 Merc EFI has a rebuilt block done by some place in the East. New ECM, Injectors are cleaned and calibrated, new coils, replaced mechanical fuel pump, serviced VST, all and all done by certified Merc. It only starts and...
  3. Q

    I need help please folks. Mercury 4stroke vibrates and stalls at times only

    2002 Mercury 60hp 4stroke motor with 209-218psi on all 4 cyl, spark is good, all good as checked, cleaned carburators 3 times, all passages flow good, acceleration plungers are good and front nozzles spray strong, new needle valves and all floats are good and levelled.. New rectifier, new fuel...
  4. Q

    Mercury 225EFI keeps blowing Switchbox

    Please help me if anyone runs into this problem: Change switchbox and it blew in seconds at rev up. No short no voltage to kill wire. It can idle and troll and do all, but rev up it blows out and loss spark in one bank quickly. '99 Mercury EFI 2stroke S/N 0G075xxxxx Big thanks Q.
  5. Q

    Help please, Johnson 200hp firing issue

    Hello All, Please give me some tips if you have anything on mind or have experienced this type of problem: '99 Model Johnson 200hp Venom is not firing right. It's getting spark at #1, #3, #4 & #6. I changed out the stator and it's doing the same. I put on a new powerpack and it's now getting...
  6. Q

    Help me Gods and Men, Computerized motors beat me up really bad. I am black and blue!

    I am working on an '04 Mercury EFI motor. I've put in days of work and tons of money to get it right so I can sell it. It starts easy, runs fine, but has a miss at one point throttling up and back down to neutral. If I gradually increased the speed, then it was fine. But if I slammed on the...
  7. Q

    '97 Evinrude optical ignition got knocked off. Help please

    Dear Experts - Joereeves, Racerone, anyone! I've just replaced the entire ignition system as tests were done along with a bunch of stuffs were out of range (starter solenoid, stator, optical sensor, powerpak). The last component went on was the timewheel plate, spark came back nice and clean on...
  8. Q

    Merc carb has a tiny hole after throttle fly.

    Ran into some Merc carbs before my time. '63-'67 and it has a tiny hole on the body of the carb right before the mount hole of the carb. Is this normal? I've seen a couple that had the same hole... Racerone? Thanks in advance.
  9. Q

    Stator testing procedure please

    Hi all, I hope one of you have a page off the manual briefing the procedure to test the stator on an '87 Yamaha 25hp Model No. 25SH, single cylinder to share. I am about to order the power pack part no. 689-85540-20-00 because spark is very weak, the coil is good, but would like to confirm that...
  10. Q

    Yamaha 2003 F115 hp sputters and dies at revving up

    Hello Guys, I hope you can give me some advice on the next thing to look for with the motor I have. Here is the problem. It starts up fine, idles at 1200rpm (I know it's very high), but cannot ajust it down. Quickly snap it in gears, stills idles high. As soon as I rev it up, it sputters and...
  11. Q

    Yamaha 75hp 4 stroke newer model - searching for parts

    Hello, Does anyone here know where to find used set of carbs for a 4 stroke Yamaha outboard 75hp - it's a newer model that's somewhere between 2002-2005 or later? Does anyone know the compatibility of these carbs between year range and hp or even different make of the motor that can replace...
  12. Q

    1969-1971 Johnson 60hp

    Dear Joe and everyone, Recently I had a post about no spark on this motor with a single auto coil. Thanks to Joe, I attached the red wire of the powerpack to the rectifier terminal to get 12V going into the powerpack. It immediately gave strong spark in all cylinders. I attached the fuel and got...
  13. Q

    Please help me identify Mercury Year and HP

    Hi All, I have a Mercury w/Serial No. 0G187226. The CDI part No. is 18495A9. Can someone tell me what horse power and year is this one. The cowling has been repainted and put new decals on without the HP. Thank you all in advance Q.
  14. Q

    1974 Johnson 70hp electricshift no spark on any cylinder

    Hello All and hope to catch Joe Reeves or J.B w/some free moments here! I am having on hand a Johnson 70hp. The model no. reads 70ESL74M. So, it's supposed to be a 1974. I am supprised that it actually has an electricshift system w/2 wires going into the lower unit. I look at the ignition...
  15. Q

    7.5hp carb on 1985 4.5hp motor

    Hello, I just modified the 7.5hp carb for my 1981 Johson 4.5hp, everthing looks good, but it does not start. It has good spark and compression since I just put on a 1982 powerhead and moved the ignition over. When I installed the seperate fuel pump it had to block the vacuum hole on the block...
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