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TOPIC: 2006 mercruiser 3.0 TKS running problem

2006 mercruiser 3.0 TKS running problem 19 Apr 2017 02:42 #26

  • Lap
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dont get to that yet...

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2006 mercruiser 3.0 TKS running problem 19 Apr 2017 04:36 #27

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flyman219 wrote: So did the piston come out with the solenoid or did it stay in the bore?

Mike


Not sure what you mean Mike. When it's cold and disconnected it's retracted to within spec, then I connect it to a 12V source and after 10 minutes it extends all the way out and also to spec. Lap should do the same test if he never replaced the solenoid. I just finished rebuilding the carb and emptying the fuel tank, will change the main fuel filter and fill it up with new gas tomorrow and will let you know the results.

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2006 mercruiser 3.0 TKS running problem 19 Apr 2017 10:30 #28

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You have a clean fuel delivery system .,. every hose, every turn and the fuel filter passages clean to the carb starting at the tank fuel pickup tube, vent clear also ?

I would still run the engine on a external tank of fresh clean fuel .

Final adjustment on the boat for the carb 2 1/4 turns for the adjustment screw to start bottom it out first gently.

Then again what do i know ?

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2006 mercruiser 3.0 TKS running problem 19 Apr 2017 12:58 #29

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crazy_russian wrote:

flyman219 wrote: So did the piston come out with the solenoid or did it stay in the bore?

Mike


Not sure what you mean Mike. When it's cold and disconnected it's retracted to within spec, then I connect it to a 12V source and after 10 minutes it extends all the way out and also to spec. Lap should do the same test if he never replaced the solenoid. I just finished rebuilding the carb and emptying the fuel tank, will change the main fuel filter and fill it up with new gas tomorrow and will let you know the results.


In your post #19 you show how to measure the travel of the solenoid in the image to the right. The piston is the shiny part that the caliper is "framing". If the piston is on the plunger (just like the picture) your piston is not stuck in the bore. If it is stuck, when you removed the TKS module it would have been a bit of a tug to get module off the carburetor lid. The TKS module's plunger tip has a head that is mushroom shaped to "snap" into the piston so it will follow the plunger when it retracts (cold) and is extended when warmed up after 8-10 minutes.

Mike

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2006 mercruiser 3.0 TKS running problem 19 Apr 2017 13:30 #30

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Gotcha. No mine wasn't stuck at all.

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2005 Bayliner 222 hardtop, 5.0 2 bbl carb, 14x19 SS prop, 18x9 Bennet trim tabs with EIC. Noland analog to NMEA 2000 converter, Garmin GFS 10 fuel flow sensor

2006 mercruiser 3.0 TKS running problem 20 Apr 2017 00:27 #31

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Well the rebuilt carb runs much better now. I still see some minor surging so I will try this next forums.iboats.com/forum/engine-repair-an...fuel-system?t=283269 .

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2006 mercruiser 3.0 TKS running problem 20 Apr 2017 14:10 #32

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Mine does the exact same thing....

Gets through the choke process fine (8 minutes) then when idling down to about 600-650 RPM it sputters and dies.

After replacing plugs, filters, etc., I just assumed I was looking at a carb rebuild. Never done that so I'm kinda dreading it but it seems like it needs it.

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2006 mercruiser 3.0 TKS running problem 20 Apr 2017 17:58 #33

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Lap, before you do that, check the fuel pressure and the fuel quality (how long has the fuel sat there?).

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2005 Bayliner 222 hardtop, 5.0 2 bbl carb, 14x19 SS prop, 18x9 Bennet trim tabs with EIC. Noland analog to NMEA 2000 converter, Garmin GFS 10 fuel flow sensor

2006 mercruiser 3.0 TKS running problem 20 Apr 2017 18:04 #34

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2005 Bayliner 222 hardtop, 5.0 2 bbl carb, 14x19 SS prop, 18x9 Bennet trim tabs with EIC. Noland analog to NMEA 2000 converter, Garmin GFS 10 fuel flow sensor

2006 mercruiser 3.0 TKS running problem 21 Apr 2017 14:23 #35

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Couple weeks

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2006 mercruiser 3.0 TKS running problem 23 Apr 2017 17:22 #36

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looks like i have a a carb problem, check spark plugs, running lean, compression all 4 cyl is 165. going to change plugs anyway but gap on old plugs is 0.35 on the engine says 0.45...why is that?

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2006 mercruiser 3.0 TKS running problem 23 Apr 2017 18:23 #37

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Depending on what brand plug.

I use AC nothing else.

Yours a lx maybe mr43lts. Longer reach plug.

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2006 mercruiser 3.0 TKS running problem 23 Apr 2017 20:32 #38

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old plugs are NGK , new AC with 0.35 gap. start engine cold 1100rpm, after warm up down to 700 and died again, finally open fuel pump filter (designer must be in jail for life.lol) it is in very bad shape. maybe this is a problem but i have feelings about TKS.

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2006 mercruiser 3.0 TKS running problem 23 Apr 2017 23:02 #39

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From what you say I would believe the TKS system is working properly, you have a problem in the idle circuit or that fuel filter you got out. They are a real pain to deal with I will admit, the fuel filter that is. LOL After the fuel filter you might try a can of seafoam in your tank to see if that can clean up your fuel system and idle circuit. No guarantees but it's cheaper than a carb rebuild.

I purchased a rebuilt carburetor for my boat but in hindsight after having the lid off the carburetor at a later time I would suggest rebuilding it yourself if you are at all mechanically minded. It is a rather simple carb and with the online manual you should have no problems. When you take off the lid look everything over and you may see a obvious problem with dirt or water in the bowl. You can buy just a lid gasket for about $5, the shipping is about the same so for $10 you can get a good look inside.

Mike

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2006 mercruiser 3.0 TKS running problem 23 Apr 2017 23:43 #40

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Listen i never liked tks.

Friend had it, we f'd with it for a week or more.

I went down to my local friends marina and found a mcarb off a engine 3.0l threw it on, runs great i think i gave the guy 20 bucks.

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2006 mercruiser 3.0 TKS running problem 24 Apr 2017 00:31 #41

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can i start engine without TKS?

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Last Edit: by Lap.

2006 mercruiser 3.0 TKS running problem 24 Apr 2017 00:35 #42

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ordered 10 mic fuel water separator few days ago so i would not have pain in a but to change fuel pump filter every year, but i just find out this separator for fuel injection. Is it going to be a problem for carb fuel system?

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Last Edit: by Lap.

2006 mercruiser 3.0 TKS running problem 24 Apr 2017 00:51 #43

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Chief Alen wrote: Listen i never liked tks.

Friend had it, we f'd with it for a week or more.

I went down to my local friends marina and found a mcarb off a engine 3.0l threw it on, runs great i think i gave the guy 20 bucks.


Chief Alen has way more experience with the TKS than I, so you can tinker with something that might be a high maintenance system (like I did) or do like he suggested and go with a typical choke plated carb. I'm old school too and think the older choke mechanisms are far easier to maintain and also make the carbs easier to keep in tune. Either system will do the job if it's running as designed.

Mike.

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2006 mercruiser 3.0 TKS running problem 24 Apr 2017 06:22 #44

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so I had 2 issues, one of the jets was plugged and the fuel pump was too weak, I rebuilt the carb $44 then couldn't adjust it properly so checked the fuel pressure/vacuum and it wasn't up to spec. Once I replaced the pump I could finally adjust the carb and it's now running better than ever (800 RPM cold, 550 warm, revs quicker, not stalling).

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2006 mercruiser 3.0 TKS running problem 24 Apr 2017 08:07 #45

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I messed with alot of carbs it's a lost art really.

The damn solenoid is a byatch.

No disrespect, i feel like i'm replying to Lap and da russians are interfering.

A bad fuel pump can and will mess ya up. 4-7 psi is what the pump should be giving you no less and no more.

Got a pic for the sep. lap you just bought ?

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2006 mercruiser 3.0 TKS running problem 24 Apr 2017 16:42 #46

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O, those russians, always interfere.lol btw i am russian too but it it doesn't matter.lol don't have a pick but filter made by sierra part 18-7982-2.

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2006 mercruiser 3.0 TKS running problem 24 Apr 2017 16:43 #47

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How to check fuel pressure?

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2006 mercruiser 3.0 TKS running problem 24 Apr 2017 23:48 #48

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2006 mercruiser 3.0 TKS running problem 24 Apr 2017 23:50 #49

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Chief since the carbs are so similar and the problem sounds similar I am just sharing what I did with mine and the results. I am not saying Lap has the same problem, just letting you know how I troubleshooted mine.

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2006 mercruiser 3.0 TKS running problem 25 Apr 2017 00:07 #50

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My grandmother was Russian. My father Hungarian, mother polish, and I was born in Germany.

Truly a mutt.

See I'm kidding.

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Be good, be happy, for tomorrow is promised to no man !

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'86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !
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