87' mariner 150

[jimmy@wm]

HELLO GUYS,I'M NEW TO THIS FORUM AND HAVE A QUESTION REGARDING A MARINER 150 THAT WILL NOT RUN.I HAVE DONE SOME CHECKING AND HAVE FOUND THAT I NO FIRE ON THE LEFT BANK OF CYLINDERS AND FIRE ON 2 OF THE CYLINDERS ON THE RIGHT BANK. IS THERE ANYONE THAT CAN GIVE ANY ADVICE FOR CHECKING THE PARTS THAT OF THE FIRING SYSTEM SUCH AS RESISTANCES AND VOLTAGES TO LOOK FOR. I HAVE ALL THE NECESSARY EQUIPMENT TO CHECK THIS WITH SO EQUIPMENT IS NOT A PROBLEM. THANKS .

 

[bob58]

Re: 87' mariner 150

Buy a manual for your engine.<br />It will give you what you are looking for<br />You can get one HERE <br /><br />Note: Using all capital letters is interpretted by those reading that you are SHOUTING.

 

[Trent]

Re: 87' mariner 150

Look here..........<br /> web page

 

[dilligafda]

Re: 87' mariner 150

Until you get a manual, you are kind of out of luck as far as actual diagnosis. You can cheat a bit and try swapping the switchboxes around. Make sure that you change all of the wires and that they are grounded well. Then look to see if you have spark on the opposite side. You really do need a manual to do the job properly though.<br /><br />Good Luck!

 

[gregmas99]

Re: 87' mariner 150

The V6 engines have a problem with there plug lead connectors, remove the green wire from each of the coils (one at a time). Get a multimeter and set it to low ohms, the resistance from the terminal that the green wire was on and the spark plug lead terminal should be around 900 ohms. If it's not pull the plug lead out of the coil pack and measure from there, if its ok there its the lead, if its not its the coil (unlikely). If both check out ok, suspect a module.<br /><br />Greg

 

[jimmy@wm]

Re: 87' mariner 150

Thanks for the info guys. Here is some of the results on the troubleshooting I done. Orignally there was no fire on cylinders 2,4,6 and fire on 1,5. #3 was dead also. After looking at the site Trent sent me to and following some of the steps listed I tried the following. I swapped the red and red/white wires going to the packs along with the blue and blue/white wires. The problem moved with #2,4 firing, 6 was dead and no fire on #1,3,5. Then I swapped the coil wire for #6,4.#4 died , #6 fired. I then swapped trigger wire #2,6 #6 fired , #2 dead. After replacing all wires I ohmed trigger wires out .Here are the results, <br /><br /> yellow sleeve black sleeve<br /> brown-----------------purple 1286<br /> white-----------------white 3.26meg<br /> purple----------------brown 1271<br /><br />Here are the readings for the bias to ground.<br /> left bank 14.86k<br /> right bank 15.14k<br />from what I have checked it looks like I need a trigger and stator. If any of you experts have any other info or diagnosis please feel free to let me know especially if I'm headed in the wrong direction.Also what are the chances of both of these devices going out at once and what could cause this?<br /><br /> Jimmy