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Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 9660
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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I have what I am told is a 350 big cam. It is missing and

Customer Question

I have what I am told is a 350 big cam. It is missing and there is a knock in the top of the engine. A friend tells me that I am hearing a slap against a stuck injector. Is that something I can fix easily by taking a valve cover off.
JA: What is the complete model and serial number of your machine?
Customer: Would have to get it. It is in a*****tractor that is a glider kit. So I have no Idea of the original application
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: No
Submitted: 10 months ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 10 months ago.

Hi I'm Wayne

I will help you with this

the knock at top is not a stuck INj.

it can be a roller on the lifter , they are carbon

this is most the cause of knock on top end

you need to pull V/C and look down and see the cam followers

you may see a broken cam follower

then that need to be replaced

I hope this helped you

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Expert:  Wayne replied 10 months ago.


Just a follow up with you

did my answer help you ??

Let me know, Please


Customer: replied 10 months ago.
Have not gotten that far yet. I probably have several days to a week before I can get to it. Will let you know. Thanks.
Expert:  Wayne replied 10 months ago.


OK keep me posted