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This answer was rated:

No oil pressure. Cummins 8.3 CTA. 1990

No oil pressure Mechanic's...

No oil pressure

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

Cummins 8.3 CTA

Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?

1990

Mechanic's Assistant: Anything else you want the truck mechanic to know before I connect you?

Yes

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Customer reply replied 6 months ago
put pressure gauge directly on port of engine block.
Customer reply replied 6 months ago
still o psi
Customer reply replied 6 months ago
took out oil fressure regulator
Customer reply replied 6 months ago
pressure
Customer reply replied 6 months ago
also started with oil filter off. no oil flow out.
Customer reply replied 6 months ago
Also borescoped through oil drain hole. Looks like pickup in in place.
Customer reply replied 6 months ago
anybody here?
Customer reply replied 6 months ago
Guess not.
Please give my money back>
Answered in 16 minutes by:
12/14/2017
Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 11,120
Experience: worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
Verified

Hi I'm Wayne

I will be assisting you with this issue today

what you are describing is the oil pump gear broke or the

oil pressure pump itself has failed

I hope this helps you

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

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Customer reply replied 6 months ago
How do I know?

Hi

Thank you for the response

you measured direct to the block

you will need to drop the oil pump and check it

it also, would be a good idea to check your rods and main bearings

make sure they are not damaged

I hope this helps you

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

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Customer reply replied 6 months ago
what do you mean "drop the oil pump" isn't it on the front of engine? toward the top
Customer reply replied 6 months ago
Is rods and main bearings the most likely damaged parts?

HI

Thank you for that

Yes, it is behind the front cover,remove drive belt,damper then front cover

Wayne

Ask Your Own Medium and Heavy Trucks Question

Hi

Just seen your 2nd question

yes rods and mains are 1st to get damage

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
Will i need any puller before getting to cover?

Hi

Thank you for that

No, remove the 6 colts and then the hub bolt and slides off

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
What gaskets are needed for oil pump change?

Hi

You will need a front oil seal, and timing cover gasket

the pump comes with a gasket

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
What about the pully on front of crank shaft?
Customer reply replied 6 months ago
How often does this happen?

Hi

The pulley will come off after the 6 bolts are removed

this happens often about 20% of the time

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
No. I mean, how often does an oil pump fail?

HI

That is what I answered you

it happens often, it is not unusual

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
If it is oil pump gear, will that be same , replace oil pump?

HI

yes the gear is mounted to the pump

comes with it

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
What is the published time to repair(hrs.) for oil pump remove and replace?

HI

Book time just for the oil pump is 9.5 hrs

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

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Customer reply replied 6 months ago
Wow

Hi

Yes that includes all cleanup of parts and such

that is the book time, real-time is 7-7.5 hours

Wayne

My goal is to give you the best experience possible! I hope I have earned a 5- star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
That equates to 18.5 hours for me.
Customer reply replied 6 months ago
I better get working on it. Thank you

Your welcome

Please remember to rate my answer

so I get credit for the question

Wayne

Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 11,120
Experience: worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
Verified
Wayne and 87 other Medium and Heavy Trucks Specialists are ready to help you
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Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 2,235
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
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