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Cummins:QSC Series |
Black Smoke At Initial Throttle Up |
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1
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Thu Sep 2 10 9:09 PM |
Yesterday
06:45 PM |
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Riley
Have QSC540´s that exhaust black smoke at initial throttle up to cruise. After a few seconds, it goes away. Not a wisp of smoke any other times. Is this a problem? |
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1 Response....
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Yesterday
09:09 PM |
#1 |
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Maka Koa
Did this just atart?
One idea would be that engine is overpropped. Black smoke indicates partially burned fuel & could be due to an overloaded engine. Once RPM´s come up, fuel begings to burn more ..... |
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Cummins:QSC Series |
does not reach RPM and uses too much fuel |
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7
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Sat Aug 28 10 7:08 PM |
Aug 18 2010
07:11 AM |
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Jehu Hand
Have two QSC 8.3s. They both have less than 50 hours
When I took the boat out last month, the port engine would not go over 1400 rpm and at all rpms was using about a gallon an hour more than the sta..... |
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Aug 28 2010
03:19 AM |
#4 |
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Jehu Hand
Yes at 1400 start to get black smoke
still under warranty but they have been busy |
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Aug 28 2010
11:44 AM |
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Paul H Foster
Sure sounds like growth on the running gear to me . may be you picked up something on the wheel ?
Paul F. |
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Aug 28 2010
02:59 PM |
#6 |
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Jehu Hand
We dived and saw nothing. |
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Aug 28 2010
07:08 PM |
#7 |
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Tony Athens
Jehu,
IF you are 100% sure your bottom and running gear are smooth as a baby´s butt, you are 100% sure this is not from a hidden compartment or something being flooded with water, AND you are getti..... |
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Cummins:QSC Series |
Digital Throttle Shitf |
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2
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Sat Aug 28 10 6:50 PM |
Aug 7 2010
08:26 PM |
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Dsaypol
I have dual DTSs, on thefly bridge and in the salon helm with twin QSC 500s. On two occassions when operating the shift from below,which I do rarely (never on the fly bridge) I have shifted from neutr..... |
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2 Responses....
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Aug 28 2010
06:37 PM |
#1 |
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Dsaypol
As nobody replied to this question, I took the liberty of outside investigation and learned much that would benefit others.... These electronic (ETSs) throtles are made by Glendinning and the folks a..... |
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Aug 28 2010
06:50 PM |
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Tony Athens
Thanks for the info AND clarification.. I don´t know about others, but the reason I never came back is I have ZERO experience with DTS (that system is Mercury´s claim to fame)............. But I do kn..... |
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Cummins:QSC Series |
Advice needed on repitching prop |
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5
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Wed Aug 4 10 11:03 PM |
Jun 3 2010
06:05 PM |
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Handn
I know I need to repitch my props but I need some help.
Boat is a 41 Riviera, engines are 540 QSC´s. Fully loaded weight is 35,000+.
WOT rpm is 2530 fully loaded at 27.5 gallons per hour per engi..... |
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Cummins:QSC Series |
Diesel view Problem |
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0
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Fri Jul 23 10 9:57 PM |
Jul 23 2010
09:57 PM |
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Tom
Earlier this week upon turning the keys to start up the starboard display screen shows the initial start up configuration screen. The boat has twin 490QSCs with approx 700 hours.
I tried to reconf..... |
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NO Responses....
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Cummins:QSC Series |
Starboard Engine Temp VS. Port Engine Temp |
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2
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Mon Jul 19 10 10:33 AM |
Jul 19 2010
01:14 AM |
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The Morgan Jane
I have a 2005 48 Sea Ray with QSC8.3´s. The port engine maintains a Temp of around 175 deg whether I am trolling or cruising. The Starboard engine varys in Temp for 145 deg to 188 deg. depending o..... |
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Cummins:QSC Series |
Oil Pressure Difference Port and Starboard Engines- what is normal? |
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4
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Wed Jun 2 10 1:27 PM |
May 21 2009
03:34 AM |
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Bob
I have qsc8.3 500 hp engines- now with 90 hours. When I first got this boat new, there was a consistent difference 0f 20 # between both engines- typical port 65, stbd 45. I was told these were withi..... |
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Cummins:QSC Series |
Cummins QSC540 DSL water in fuel alarm |
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1
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Sun May 23 10 2:09 PM |
May 23 2010
02:41 AM |
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Al Germi
I just purchased a 2007 Tiara convertible with twin Cummins QSC540 DSL engines. The monitoring system triggered a water in fuel alarm. However, when we checked the primary racor filters, water was min..... |
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Cummins:QSC Series |
Air Fuel Control Derate |
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3
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Sun May 9 10 6:33 PM |
May 4 2010
10:50 PM |
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A-ron
I have not run into this before. qsc 8.3 540 46405819. 34 Calvin Beals lobster boat 3126 hours. a lot of black smoke at idle increases as rpm increases. no fault codes logged, but in an air fuel ..... |
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Cummins:QSC Series |
Winterizing QSC 8.3 540 HP Engines |
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14
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Mon May 3 10 3:27 PM |
Apr 27 2010
12:56 PM |
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Jus Bird
I recently purchased a 35 Cabo Express with QSC 8.3 540 HP Engines. Do any of the members who must winterize their engines have a technique for getting the pink winterizing antifreeze into the raw wa..... |
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Cummins:QSC Series |
Break in Period |
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2
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Fri Apr 30 10 8:58 PM |
Apr 30 2010
07:06 PM |
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Nhl
Hey guys, looking to buy a 38 Open with QSC 8.3 motors with 670 hours on each motor. The boat is a 2007. Are the hours considered hi, low, or just broke in for these diesels? Any help would be appreci..... |
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Cummins:QSC Series |
Leak rear crankcase seal QSC 540 |
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4
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Wed Apr 14 10 8:08 PM |
Mar 1 2010
02:30 PM |
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Handn
I noticed ten drops of dark engine oil on the pad at the rear of my starboard engine when doing my weekly inspection. I felt a light film of oil on the engine where it joins the transmission. The bo..... |
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Cummins:QSC Series |
Turbo Wastegate Bushing |
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7
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Wed Mar 17 10 1:36 PM |
Mar 14 2010
02:37 PM |
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Handn
Here is a photo of the wastegate of my port turbo (QSC 540). As you can see the pad is discolored by bushing dust. The mechanic says there is play in the bushing. The pad on the starboard engine is ..... |
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Cummins:QSC Series |
Ultra Low Sulfur Fuel |
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5
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Sat Feb 27 10 8:23 AM |
Feb 19 2010
03:43 AM |
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Gcat
With the move from low sulfur to ultra low sulfur fuels is anyone concerned about
lack of lubricity? Even though we are buying red diesel it is still ULS, but tax exempt. Some of the local fuel docks..... |
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Cummins:QSC Series |
Broken zincs |
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10
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Fri Feb 12 10 6:47 AM |
Jan 17 2010
12:13 AM |
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Dsaypol
I have 2 QSC 8.3 500 hp Cummi....when changing the zincs (total of 6 in each engine)and removing the brass holders, several of the old corroded zincs broke off and can´t be retrieved. I assume this is..... |
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