Mercury V6 XR2 - Does this Stator looks bad?

[Chris1956]

Link and synch?

Replace any fuel filters.

Richen the idle mixture to allow easier acceleration.

 

[Superjetjim]

Link and synch?

Replace any fuel filters.

Richen the idle mixture to allow easier acceleration.

Thanks Chris, yep done filter and link/sync. Didnt know you could richen the carbs up on these, outside of jet changes. Would it pick up on the starter fluid if it was lean though?

 

[Superjetjim]

UPDATE - so managed to water test it again yesterday. Still wont pick up in the water, it bogs. Took this video as we sprayed starter fluid into the intake and feathered the throttle to keep it running (no change, it doesn't pickup)

Updated list up things I've replaced and done below:

• Carbs stripped, cleaned and reassembled
• Link and Sync
• New Fuel filters
• New OEM switch boxes
• New coils, leads and plugs
• Compression check (130 PSI all pots)
• New CDI Stator
• New CDI Pickup
• New Impeller and water pump
• External electric fuel pump has solid 6PSI on gauge
• Reverted to new mechanical fuel pump (actually worse)
• Bypassed boat tank to outboard tank to alleviate that side

This is it running out of the water on hose.

I'll pull the reeds and check those this week. Its really not happy at all.
Any other ideas please?

 

[Chris1956]

The early 90's and older Merc V6 motors had fixed idle jets. My '93 has adjustable idle jets. I would have thought your motor would have adj jets.

Merc's without accelerator pumps have a history of needing a bit more richening of the idle jets to allow acceleration. The IL6 motors were known for this. The V6 motors seem to be more tolerant.

 

[racerone]

Flywheel magnet checked ?-----Recheck all wires from switch boxes to the coils.-----Sounds like it is running on 4 of 6 cylinders.

 

[Dukedog]

chris, his motor has tha older WH's that have been changed which do not have anyway ta change idle except jetting.. his motor came with WMH's...

its sounds 'lectric ta me... parts and/or wiring... if ya spray fluid in it and it does nothing but bog its not firing on all cylinders for whatever reason.... fillin' up tha holes but something ain't firin' tha plug??? only hittin' on maybe 3 or 4....

know ya said its all new but sometimes "new" don't mean much..... more true everyday..

and yep, ya need ta check tha flywheel magnets....

did you try ta run it with any of tha old parts on it???

jus noticed something else.. whats your house water pressure???,, not much leavin' tha prop and exhaust at idle???

 

[Superjetjim]

chris, his motor has tha WH's which do not have anyway ta change idle except jetting..

its sounds 'lectric ta me... parts and/or wiring... if ya spray fluid in it and it does nothing but bog its not firing on all cylinders for whatever reason.... fillin' up tha holes but something ain't firin' tha plug??? only hittin' on maybe 3 or 4....

know ya said its all new but sometimes "new" don't mean much..... more true everyday..

and yep, ya need ta check tha flywheel magnets....

did you try ta run it with any of tha old parts on it???

jus noticed something else.. whats your house water pressure???,, not much leavin' tha prop and exhaust at idle???

Hi Chris,

Not checked the flywheel magnets in fairness, will pull and check that, easy thing to do.
It runs a little better with the new parts (CDI Stator and Trigger)

House water pressure is really high

Interestingly, it clears up a little if you pump the primer bulb, but remains flat / bogging under load. It doesn't bog on the hose with the electric external fuel pump (guess due to higher pressure v mechanical pump)

 

[Dukedog]

look here for a build date stamp.. may not be very readable but its there on tha block somewhere... should be area "behind tha advance timin' arm", kinda behind tha bend in tha arm....

 

[Superjetjim]

Ah thanks, found it!

 

[Superjetjim]

Just pulled the reeds, all look perfect, seal OK and aren't sticking.

Also pulled and checked the flywheel magnets - all good there.

 

[Dukedog]

ya need a spark tester or use your timin' lite ta test for fire on each clyinder off idle..................... or if ya like me i sometimes pull one plug completely out and start tha thing... do all six undividedly... you can wait till dark if ya have trouble seen' any spark from tha plugs.. but i think its 'lectrical.. could be wired wrong?.. could be a bad "new" part???

 

[Superjetjim]

ya need a spark tester or use your timin' lite ta test for fire on each clyinder off idle..................... or if ya like me i sometimes pull one plug completely out and start tha thing... do all six undividedly... you can wait till dark if ya have trouble seen' any spark from tha plugs.. but i think its 'lectrical.. could be wired wrong?.. could be a bad "new" part???

I think you could be right.. Just been out and tested the coils with an OHM meter. Of the 6x coils, 4 are in spec, the 5th shows very low reading on the meter and the 6th is dead. Will remove the green wires to the coils and re-
test tomorrow to be sure.. I really hope that's the issue, in my head they should all read the same, right?

 

[racerone]

Just a few tests.----Start motor let it idle.----Remove 1 plug wire at a time.----Post results.----Does spark jump a gap of 3/8" on each lead ?---Mark flywheel for TDC for each cylinder.----Use timing light to check each cylinder at idle.-----At full throttle on the lake look into each bore with a strong flashlight.----Compare fuel amount coming up the nozzles.----Tested crankcase compression ?----Checked exhaust housing for blockage ?

 

[Dukedog]

jus for info.. do you are anyone helping you have any experience with tha V6 merc??? as for your concern with pressure go here, follow his specs, and your concerns will go away... might as well pull tha powerhead and check this.... yours (adapter, coolin' system) is tha same as his BIG motors...

US1 Mercury Outboard Race Engines and Top Pin Pistons

Home of the Welded Top Pin Piston and National Champion Formula One V6 Mercury Outboard Race Motors

www.us1.cc

 

[Dukedog]

"Now on the one-piece plate the 2.4 dump hole were pretty close to the right size but I still modify them. The 2.5 plate dump holes were all over the place. I have seen some that were so big the motor could not get more than 5-lbs. water pressure at 9000 RPM. I weld up or tap and brass plug all the dump holes in the exhaust plate. The 2.4 will have 4. Two in back and two in front. The 2.5 will have two ridiculously large dump holes in the front. Keep in mind the worst thing for a motor is to run it too cold so don't worry about closing these holes up a little. After I block the stock holes I redrill two new holes in the front of the plate, right next to the other holes, that are 19/64. This will allow proper cooling, good water pressure and still let some heat develop."

this is tha part that effects yours.. pay no attention to anything 2.4.. yours is same as 2.5....... something he doesn't mention.. you can kinda change tha pressure with tha hose commin' from tha poppet cover.. i've run that opening completely closed on a coupla motors justa get tha pressure up....

 

[Superjetjim]

"Now on the one-piece plate the 2.4 dump hole were pretty close to the right size but I still modify them. The 2.5 plate dump holes were all over the place. I have seen some that were so big the motor could not get more than 5-lbs. water pressure at 9000 RPM. I weld up or tap and brass plug all the dump holes in the exhaust plate. The 2.4 will have 4. Two in back and two in front. The 2.5 will have two ridiculously large dump holes in the front. Keep in mind the worst thing for a motor is to run it too cold so don't worry about closing these holes up a little. After I block the stock holes I redrill two new holes in the front of the plate, right next to the other holes, that are 19/64. This will allow proper cooling, good water pressure and still let some heat develop."

this is tha part that effects yours.. pay no attention to anything 2.4.. yours is same as 2.5....... something he doesn't mention.. you can kinda change tha pressure with tha hose commin' from tha poppet cover.. i've run that opening completely closed on a coupla motors justa get tha pressure up....

Nice, liking that, so if you block off the pee hole coming from the poppet it flows more water through the heads and out of the other pee hole?
The way it is set now, just feels like low pressure from the poppet, hardly anything from pee hole from the heads and loads leaving the prop hub. That said I've not got the boat on the plane yet, but that's what I'm seeing on the hose. Just seems like little pressure in the water jacket of the cylinder, almost like they're not filling up enough to reach the top of jacket.