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Re: High exhaust temperature on CAT 3508B series marine engine on left bank only

dear copsetic                                                                                                                                                                                                       As u have doneall the necessary inspection n cleaning in my experience it can be that feul is burning in ur lefthand Exhaust manifold it can be that 1 of ur injector tip is broken or one fuel injector fuel section oring is damaged an is leaking feul into the cylindern out at exhaust stoke n gets burned in the exaust manifold n makes it hotter than the otherso u have to investgate check the fuel durationof left handinjectors an the difference more than or lessthan the others check the manifod with infra red thermometereach cylinderto find the injector bye

Visitor

Re: High exhaust temperature on CAT 3508B series marine engine on left bank only

Hello , can you tell me if and how you solved the problem?
Contributor

Re: High exhaust temperature on CAT 3508B series marine engine on left bank only

hi

this is normal no need to worry

just check ur inlet temp.

mary
Visitor

Re: High exhaust temperature on CAT 3508B series marine engine on left bank only

I will get our local CAT mechanic to check. He has done just about everything else. Thanks for the tip

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Super Contributor

Re: High exhaust temperature on CAT 3508B series marine engine on left bank only

Have you checked the camshaft timing?
New member

Re: High exhaust temperature on CAT 3508B series marine engine on left bank only

Hey same problem higher temp. Can fuel rack position be to blame?

Visitor

High exhaust temperature on CAT 3508B series marine engine on left bank only

Running a pair of 3508 B marine diesels on 41 meter vessel using keel coolers. Left bank of Starboard engine exhaust temperature 

repeatedly goes over 1100 degrees Fahrenheit when RPM's are increased over 1500. The coolant temperature is 194 -196 degrees,

the same as the port engine. Comparing both engine numbers, Load is similar, fuel burn is similar, coolant and aftercooler temperature

is similar, There is a 30 -90 degree temperature difference between the left bank and the right bank. The engines have 3800 hrs on them

 

 

We have serviced turbo's, cleaned the aftercoolers, adjusted valves, injector cut out tests, polished the keel coolers and still have

the same issue. Help...!      Robot Sad

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