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Caterpillar:C7 |
Overheating And Leakage On Intake Valves |
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Mon Aug 16 10 10:37 AM |
Aug 16 2010
12:41 AM |
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Erossan
I have a Bertram 390 with 600 hours , my aftercooloer have been creating nothing but problems since i had my boat who is only 4 years old . i have a very rigid schedule on maintance , all oil changed ..... |
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Caterpillar:C7 |
CAT C7 head gaskets |
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Thu Feb 18 10 12:15 AM |
Feb 12 2009
07:53 PM |
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Kevin
I have 2007 CAT C7 engines in my boat and just had a head gasket fail. Has anyone else had head gasket problems with the C7. The engine never ran over 205 degrees, so it´s not an overheating problem. |
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Caterpillar:C7 |
What is Normal coolant temp for Cat C-7 for light, med, and heavy load? |
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2
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Sat Jan 30 10 3:30 AM |
Jan 29 2010
01:51 AM |
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Cappeter
What is Coolant temp at light, medium and heavy load on twin Cat C7 455HP in a 30,000# boat? |
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Caterpillar:C7 |
C7 Cat normal running coolant temp |
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5
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Sat Jan 30 10 3:10 AM |
Jan 28 2010
09:05 PM |
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Cappeter
Initial see trial on 2002yr 35Carolina Classic with C-7 Cats cut short due to overheating - 198 and 202 and black smoke with seawater temp at 48deg - will completely pull and clean all cooling compone..... |
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Caterpillar:C7 |
ZF280A-C7Cat-35CarolinaClassic |
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9
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Thu Jan 28 10 1:56 PM |
Jan 27 2010
03:44 AM |
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Cappeter
I have contract on subject boat-one ZF280A has black and I mean black oil in it - I am very concerned - plan on doing oil analaysis on both engines and trans tomorrow - but the black oil has me concer..... |
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Caterpillar:C7 |
Replacing Engines |
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2
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Wed Jan 27 10 11:32 PM |
Jan 27 2010
11:26 PM |
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Rampage
I have a 2006 Rampage 33 with C-7s.Cat just replaced both engines after 240 total hours. All caused by the after coolers. |
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Caterpillar:C7 |
Leaking Aftercooler has damaged head |
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1
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Wed Jan 27 10 11:31 PM |
Jun 19 2009
06:05 PM |
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Onarampage
I found that my overheating problem was bring caused by a bad valve seat that was damaged by a leaking aftercooler. It seems that the salt water damaged the valve seats allowing the gasses to escape ..... |
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Caterpillar:C7 |
C7 Reliability |
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2
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Sat Oct 17 09 12:21 AM |
Oct 16 2009
03:36 AM |
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Davisjrjr
OK - after looking into the QSC & C9, I have some attractive boats available with c7´s - after hearing all the war stories of 3116 & 3126´s - it gives me reservations, BUT talking with several CAT fac..... |
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Caterpillar:C7 |
Intake manifold overheat |
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2
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Wed Jun 17 09 12:57 AM |
Jun 16 2009
08:59 PM |
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Onarampage
I have a pair of C7s and the port engine shows high intake manifold temp. I have replaced the aftercooler, changed the raw water impeller, (I am going to look at it again to make sure the darn thing i..... |
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Caterpillar:C7 |
C7 Aftercoolers |
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3
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Fri Dec 5 08 11:17 AM |
Dec 2 2008
11:42 PM |
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Allenlurch
Operating three 43 footers in tropical conditions with twin C7´s at C rating. All engines aftercoolers have leaked raw water into inlet manifold with one engine on its second aftercooler change...... |
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Caterpillar:C7 |
C7´s Hard to Start and Lots of Smoke |
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5
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Fri Oct 31 08 11:13 PM |
Oct 31 2008
11:47 AM |
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Jim
I had new C7´s (455hp) installed two years ago in a Tiara 40. They have been chronically difficult to start. The engines always start, but they often stutter and then die and then the next tim..... |
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Caterpillar:C7 |
Uneven Fuel Consumption Rate |
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7
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Fri Oct 31 08 4:44 PM |
Sep 13 2008
06:20 AM |
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Galileo
I have twin c7 engines on my boat but shows diffeent consumption rate. The starboard engine shows at least 2 gallons per hour more at any speed than the port engine. The props were already checked by ..... |
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Caterpillar:C7 |
New C7 bad right off the shelf... |
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1
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Sun May 25 08 11:18 PM |
May 25 2008
10:58 PM |
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Captn Dan
FYI: Gents, I just repowered my charter fishing boat with a pair of brand new C7s. Got ready for the sea trial started the starboard and she purred like a Cat. Ha Ha... The port engine started up an..... |
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Caterpillar:C7 |
fuel comsumption C7 vs 3126 |
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1
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Sun Mar 30 08 4:29 PM |
Mar 30 2008
03:19 PM |
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Tomas Kempe
Holly sent me an e-mail that I can not respond to. He claim that his C7 consumes 40% more than his old 3126 and I sure have not the answer but made this reply - any other thoughts
Hi: That sound st..... |
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Caterpillar:C7 |
C7 Unpopular? |
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3
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Wed Mar 26 08 4:17 PM |
Mar 26 2008
01:03 PM |
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Cap10Pat
I thought the Cat C7 was supposed to be the current small engine. That forum section has been very light with no entry for 6 months. What does that mean for the engine? Has this engine been offered in..... |
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