Outboard smoke during startup...

RUGGERDUDE · 03-16-2005, 02:34 AM

I have twin Merc 150 EFI outboards. One thing that I can't stand is the amount of smoke created when I start the motors. My buddy has twin Yamahas which produce a relatively small amount of smoke. Engine manufacturers aside, is there any thing that I can do (type of oil) to reduce to amount of smoke? I should note that after the startup, the engine gets up to normal operating temp, its all good. Thanks, Will

KINGINDBAG · 03-16-2005, 08:04 AM

What year EFI do you have? What type oil do you use? Ive got yamahas that smoke when I first fire them up after about 30sec the oil in them burns off. A lot of times its the oil after sitting up in the heads that you see burning off. Now if they smoke after about 1 min of running you might need to look at your rings. Hope this helps,Good luck

Chilli · 03-16-2005, 09:19 AM

Rugger,

I burn Penzoil Synthetic Blend in my Yammi EFI 0x66... It doesn't smoke too much on the start up. Matter of fact I have a picture taken just after start up... Are your mercs smoking more than this???

KINGINDBAG · 03-16-2005, 09:47 AM

Damm looks like your burning that 105oct. lol

Mist-Rest · 03-16-2005, 09:52 AM

Looks more like nitromethane.

I'm using the Penn semi blend and my carb'ed 200 smokes very little on start up.

RUGGERDUDE · 03-16-2005, 10:07 AM

My engines are 1999 outboards and I run the Quicksilver oil.
Will

KINGINDBAG · 03-16-2005, 10:31 AM

Will, with them 99s you have about 6 years on them,you might want to have your dealer look at your rings.I had 95 o66s that after about 5 years on them they start to burn more oil.You can use the yamaha lube oil it a bit thicker.

Chilli · 03-16-2005, 10:40 AM

On a more serious note, I think King has a predent suggestion on getting the rings checked. You may also want to try a couple of different oils and see if your engine perfers a certain flavor.

RUGGERDUDE · 03-16-2005, 11:05 AM

Thanks guys for the help. KINGINDABAG, I purchased the boat in 2002 as a dealer demo. I really haven't put a ton of hours on them. I do still have a year of warranty left. Do you think I should have them check out the rings. Or could it be the type of oil that produces more smoke? It's more annoying than a performance problem, the motors run great. But if there is a potential wear problem, I much rather have someone look at it now.
Thanks, Will

KINGINDBAG · 03-16-2005, 11:14 AM

Hey will, if I were you id have your dealer look at them with one year left on warrantys get them to look at it for you.Better now then 30miles offshore. Glad I could help ya.

03-16-2005, 02:34 AM	#1
RUGGERDUDE Crab mustard is good Join Date: Mar 2005 Location: Jarrettsville, MD Posts: 885 Credits: 1,249.2	Outboard smoke during startup... I have twin Merc 150 EFI outboards. One thing that I can't stand is the amount of smoke created when I start the motors. My buddy has twin Yamahas which produce a relatively small amount of smoke. Engine manufacturers aside, is there any thing that I can do (type of oil) to reduce to amount of smoke? I should note that after the startup, the engine gets up to normal operating temp, its all good. Thanks, Will

03-16-2005, 08:04 AM	#2
KINGINDBAG Bite me Join Date: Jan 2005 Location: newport nc Posts: 222 Credits: 1,224.9 Occupation: MATE/CAPT. DADDY	What year EFI do you have? What type oil do you use? Ive got yamahas that smoke when I first fire them up after about 30sec the oil in them burns off. A lot of times its the oil after sitting up in the heads that you see burning off. Now if they smoke after about 1 min of running you might need to look at your rings. Hope this helps,Good luck __________________ NOW BOOKING FOR THE 2006 CHARTER SEASON Click here to check out Sudden impact

03-16-2005, 09:19 AM	#3
Chilli Crab mustard is good Join Date: Feb 2005 Location: Sparks, Maryland Posts: 622 Credits: 3,503.3 Occupation: Survey Vessel Captain, Sportfishing Mate	Rugger, I burn Penzoil Synthetic Blend in my Yammi EFI 0x66... It doesn't smoke too much on the start up. Matter of fact I have a picture taken just after start up... Are your mercs smoking more than this??? __________________ Offering trips out of Ocean City, Maryland for Marlin, Tuna, Dolphin and much more. Now booking for the 06' season 410 472 1139 http://www.adrenalinesportfishing.com/

03-16-2005, 09:47 AM	#4
KINGINDBAG Bite me Join Date: Jan 2005 Location: newport nc Posts: 222 Credits: 1,224.9 Occupation: MATE/CAPT. DADDY	Damm looks like your burning that 105oct. lol __________________ NOW BOOKING FOR THE 2006 CHARTER SEASON Click here to check out Sudden impact

03-16-2005, 10:31 AM	#7
KINGINDBAG Bite me Join Date: Jan 2005 Location: newport nc Posts: 222 Credits: 1,224.9 Occupation: MATE/CAPT. DADDY	Will, with them 99s you have about 6 years on them,you might want to have your dealer look at your rings.I had 95 o66s that after about 5 years on them they start to burn more oil.You can use the yamaha lube oil it a bit thicker. __________________ NOW BOOKING FOR THE 2006 CHARTER SEASON Click here to check out Sudden impact

03-16-2005, 09:52 AM	#5
Mist-Rest Cockpit Monkey In Training Join Date: Mar 2005 Location: Carlisle, MA. Moosehead Lake, ME. Posts: 39 Credits: 1,211.2 Occupation: Property Manager/ FF	Looks more like nitromethane. I'm using the Penn semi blend and my carb'ed 200 smokes very little on start up.

03-16-2005, 10:07 AM	#6
RUGGERDUDE Crab mustard is good Join Date: Mar 2005 Location: Jarrettsville, MD Posts: 885 Credits: 1,249.2	My engines are 1999 outboards and I run the Quicksilver oil. Will

03-16-2005, 10:40 AM	#8
Chilli Crab mustard is good Join Date: Feb 2005 Location: Sparks, Maryland Posts: 622 Credits: 3,503.3 Occupation: Survey Vessel Captain, Sportfishing Mate	On a more serious note, I think King has a predent suggestion on getting the rings checked. You may also want to try a couple of different oils and see if your engine perfers a certain flavor. __________________ Offering trips out of Ocean City, Maryland for Marlin, Tuna, Dolphin and much more. Now booking for the 06' season 410 472 1139 http://www.adrenalinesportfishing.com/

03-16-2005, 11:05 AM	#9
RUGGERDUDE Crab mustard is good Join Date: Mar 2005 Location: Jarrettsville, MD Posts: 885 Credits: 1,249.2	Thanks guys for the help. KINGINDABAG, I purchased the boat in 2002 as a dealer demo. I really haven't put a ton of hours on them. I do still have a year of warranty left. Do you think I should have them check out the rings. Or could it be the type of oil that produces more smoke? It's more annoying than a performance problem, the motors run great. But if there is a potential wear problem, I much rather have someone look at it now. Thanks, Will

03-16-2005, 11:14 AM	#10
KINGINDBAG Bite me Join Date: Jan 2005 Location: newport nc Posts: 222 Credits: 1,224.9 Occupation: MATE/CAPT. DADDY	Hey will, if I were you id have your dealer look at them with one year left on warrantys get them to look at it for you.Better now then 30miles offshore. Glad I could help ya. __________________ NOW BOOKING FOR THE 2006 CHARTER SEASON Click here to check out Sudden impact

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