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go-west..
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1152
Experience:  Technican with 20 years experience focused on engines and electrical.
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I have a 2007 peterbilt with a cummins isc that is getting

Customer Question

i have a 2007 peterbilt with a cummins isc that is getting coolant on top of pistons. i removed the head and sent to machine shop to be checked all is good with head. head gasket seemed alright where else could i be getting coolant
engine number- 46803724
vin- 2nprlnox28m763377
year- 2007
model- 340
Submitted: 4 months ago.
Category: Medium and Heavy Trucks
Expert:  go-west.. replied 4 months ago.
Good evening
Does this engine have a egr cooler?If so has it been pressure tested?Ty
Customer: replied 4 months ago.

it does have egr cooler but hasnt been tested how do u test it?

Expert:  go-west.. replied 4 months ago.

you have 2 water pipes

block one off and put 15 psi to the other side and see if it holds that pessure for 10 min..put it in a bucket of water and see if there are any bubbles

let me know how you do..

Customer: replied 4 months ago.

ok i will try that is there a tool for pressuring the cooler

Expert:  go-west.. replied 4 months ago.
There is but expensive
Better off to make something up as you may only us it once
Customer: replied 4 months ago.

will try as soon as possible and let you know