Diesel Engine Owners- I've a DUSTED engine, so cummins says
This will be somewhat of a lengthy post. What I'm looking for is a very short response. "RUN and or GET A SECOND OPINION"
In Nov of 2020 a code popped up "Too much crank case pressure" on an ISL 400-8.9L engine. Tech responded "Need to change the crank case filter". Told tech I just replaced it less than 1000 miles earlier. "Oh, he responded. We'll have to dig deeper". Did a "Blow Down Test" Found air was passing up thru the valve guides in the head. Replaced some valve guides and rocker arms. Reassembled-test drove-got same code again. (warranty company did pay for this service)
Next-removed head and dug into the block. (by the way, this is a rear engine radiator/Charge air cooler so those had to be dropped)
Found the number 5 cylinder with broken rings which was allowing too much pressure escaping. Did find the crank case filter saturated with oil. Did complete engine overhaul. New sleeves-pistons-rings-pistons arms-bearings etc. (Had an oil analysis performed by "Blackstone labs". Report was read by a 45 year diesel mechanic-He stated Engine is not dusted).Shop recommended a new head and turbo. I balked. Took head to a reputable machine shop. Didn't need resurfacing and no burnt valves etc. Did note some of the "seats" were not seating properly. Tech stated they "Cut seats and valves to correct".
Took turbo to a reputable turbo company in Lake Havasu AZ. Checked the operation of the unit and stated fan blades looked good and checked the internal operation. Did NOT check turbo thrust but stated in their opinion the turbo did not have any signs of being DUSTED.
Since the 3 1/2 month ordeal, we have driven 600 miles as of todays date. Now in Phoenix with an engine that overheated between Parker AZ and Vicksburg AZ. Limped in to Avondale AZ. Service center checked the CFM's of air passing thru the CAC/radiator and found inconsistencies in air measurement. Recommended cleaning radiator. (this was just previously done by the 1st service center as well as the Charge Air Cooler) Found an excessive debris and dirt. CFM's came up to specs. Did find the turbo had a loose hose and clamp causing a lose of turbo thrust. Did find the fan was not coming on to cool radiator. That is to be serviced.
Second service center inquired what the first service center did. Told them the above. Second service immediately stated the engine is DUSTED because the following was not replaced. Second service center is now recommending NEW charge air cooler-new turbo-new head-new air compressor and REBUILDING the ISL 400 8.9L diesel engine all over AGAIN. And we just have put 600 miles since the first service center performed the work.
YOUR THOUGHTS ARE MUCH APPRECIATED.
In Nov of 2020 a code popped up "Too much crank case pressure" on an ISL 400-8.9L engine. Tech responded "Need to change the crank case filter". Told tech I just replaced it less than 1000 miles earlier. "Oh, he responded. We'll have to dig deeper". Did a "Blow Down Test" Found air was passing up thru the valve guides in the head. Replaced some valve guides and rocker arms. Reassembled-test drove-got same code again. (warranty company did pay for this service)
Next-removed head and dug into the block. (by the way, this is a rear engine radiator/Charge air cooler so those had to be dropped)
Found the number 5 cylinder with broken rings which was allowing too much pressure escaping. Did find the crank case filter saturated with oil. Did complete engine overhaul. New sleeves-pistons-rings-pistons arms-bearings etc. (Had an oil analysis performed by "Blackstone labs". Report was read by a 45 year diesel mechanic-He stated Engine is not dusted).Shop recommended a new head and turbo. I balked. Took head to a reputable machine shop. Didn't need resurfacing and no burnt valves etc. Did note some of the "seats" were not seating properly. Tech stated they "Cut seats and valves to correct".
Took turbo to a reputable turbo company in Lake Havasu AZ. Checked the operation of the unit and stated fan blades looked good and checked the internal operation. Did NOT check turbo thrust but stated in their opinion the turbo did not have any signs of being DUSTED.
Since the 3 1/2 month ordeal, we have driven 600 miles as of todays date. Now in Phoenix with an engine that overheated between Parker AZ and Vicksburg AZ. Limped in to Avondale AZ. Service center checked the CFM's of air passing thru the CAC/radiator and found inconsistencies in air measurement. Recommended cleaning radiator. (this was just previously done by the 1st service center as well as the Charge Air Cooler) Found an excessive debris and dirt. CFM's came up to specs. Did find the turbo had a loose hose and clamp causing a lose of turbo thrust. Did find the fan was not coming on to cool radiator. That is to be serviced.
Second service center inquired what the first service center did. Told them the above. Second service immediately stated the engine is DUSTED because the following was not replaced. Second service center is now recommending NEW charge air cooler-new turbo-new head-new air compressor and REBUILDING the ISL 400 8.9L diesel engine all over AGAIN. And we just have put 600 miles since the first service center performed the work.
YOUR THOUGHTS ARE MUCH APPRECIATED.
