Coast Resorts Open Roads Forum: CAT 3126E acceleration power loss after fuel filter change
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 > CAT 3126E acceleration power loss after fuel filter change

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Phaeton04

Alabama

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Posted: 11/26/22 10:16am Link  |  Quote  |  Print  |  Notify Moderator

I installed the new water/fuel separator filter and made sure the old gasket on the thread end was removed and new gasket installed. Filled up the new filter with fuel making sure to plug the center hole. installed the new fuel filter and started it up and test drove it.
It now it has Very low power when accelerating, it shakes but very low acceleration power.
I also installed a new air filter.

What could be wrong, It ran great up until I changed the water/fuel filter. This is on a Cat 3126E (HEP20882) with only (1) fuel/water separator.
I have now installed a total of 3 new filters with the same results. using the following filters Cat 1752949, Baldwin BF1268 and now Wix 33783 w/bowl.
Freightliner said the original filter was Racor 3203 (Alliance ABPN12232FRT03)
Totally confused. What do I need to try now.

enblethen

Moses Lake, WA

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Posted: 11/26/22 10:42am Link  |  Quote  |  Print  |  Notify Moderator

Could be air between the injector pump and injectors. Could try bleeding fuel lines at injectors.


Bud
USAF Retired
Pace Arrow

2003 Chev Ice Road Tracker


Phaeton04

Alabama

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Posted: 11/26/22 11:04am Link  |  Quote  |  Print  |  Notify Moderator

Thank you for the reply...

S Davis

Western WA

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Posted: 11/26/22 11:39am Link  |  Quote  |  Print  |  Notify Moderator

Could something have gotten on your MAF sensor when you changed the air filter?

Phaeton04

Alabama

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Posted: 11/26/22 12:34pm Link  |  Quote  |  Print  |  Notify Moderator

Hi S Davis,
Thanks for the reply.
This problem started after I initially changed the fuel/water separator filter. I have since put on a new air filter as well as try 2 other fuel filters. But, I will still look at the MAF sensor just in case..

enblethen

Moses Lake, WA

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Posted: 11/26/22 01:39pm Link  |  Quote  |  Print  |  Notify Moderator

Here is an article on Cat low power. 3126e article

Phaeton04

Alabama

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Posted: 11/26/22 02:12pm Link  |  Quote  |  Print  |  Notify Moderator

Thank you enblethen.

enblethen

Moses Lake, WA

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Posted: 11/27/22 10:41am Link  |  Quote  |  Print  |  Notify Moderator

Does your Cat have the hand pump on the fuel injector pump? if it does make sure it is closed.

MEXICOWANDERER

las peƱas, michoacan, mexico

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Posted: 11/27/22 11:58am Link  |  Quote  |  Print  |  Notify Moderator

40 some odd years ago I installed several RAcor filter assemblies on a fleet of plow trucks with 3208 engines. It didn't matter how careful I was, I had to bleed lines from the filter to individual injectors. I was fortunate to have offset tubing fuel line wrenches. Hint: do this on concrete or dirt because you'll lose more than a gallon of fuel.

Phaeton04

Alabama

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Posted: 11/27/22 03:23pm Link  |  Quote  |  Print  |  Notify Moderator

Hi Enblethen,
I do not have the hand pump on my unit.
Hi Mexicowanderer, thanks for the suggestion.

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