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Topic: Engine Hesitation, Momentary (Read 1700 times) previous topic - next topic
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Re: Engine Hesitation, Momentary

Reply #25 –
Yahoo Message Number: 115098
I miss read your original post saying it was unrelated to steep climbs or grades, however knowing your boost psi will greatly aid you in diagnosing engine power issues. Our mechicanicals are known for thier reliability but due to the lack of a computer or silverleaf capatibility it's a pain in the rear troubleshoot some issues. With mine it was a case of insidious power loss till it was evident after I changed the fuel filters a couple of times that I had a turbo/ air loss issue. Took it to the Cummins shop in omaha to perform the leak check. They showed me all the little holes in the charge air cooler caused by corrosion over the years. After calling Gillig I discovered they no longer make our model of CAC and had to locate and modify a different model charge air cooler to fit. Along with the CAC we replaced the trans cooler as well because of the same corrosion issues starting on it. After all was replaced, it was night and day on power performance. Felt like I was driving a sports car. Price was pretty steep since it was a Cummins shop.... 4,500 for everything. Unrealted or not about 2 years later I had a complete catastrophic failure of the the turbo resulting in a turbo and manifold replacement. The power/ performance of the rig remained the same pre and post replacement of the turbo.
I bought my rig in Minnesota with all the associated salt issues in that part of the world, which I have been correcting bit by bit over the years.

Hope this helps some!

Jesse 97 Intrigue 10357

Re: Engine Hesitation, Momentary

Reply #26 –
Yahoo Message Number: 115104
Jesse,
Thanks for your candid info. Yes, it helps a lot!
So far, my power seems generally to be OK except for the occasional hiccups. However, based on your advice it sounds like my next tech visit should include an aftermarket turbo boost gauge installation. I have a Silverleaf. I purchased it from a friend at a very reasonable price. I installed it only to give me a readout of the actual gear that my transmission is in at any time. This is useful on steep downhill runs. But of course the other readouts are null as they are designed for the newer electronic engines.
I am due for a visit to my favorite tech, Brian Schack. His shop is next door to Kevin Waite's in Junction City, OR. I will have him check boost and CAC for leaks......and everything else related to this issue.
Thanks again for taking the time to give me the in-depth details of your situation.
I am an optimist so, I am still hoping for a simpler solution :).

Re: Engine Hesitation, Momentary

Reply #27 –
Yahoo Message Number: 115108
Kevin & Brian two very great people. SilverLeaf make a PC version and I use it 99% of the time.

Wally & Elta Mae
2007Allure 470 Sunset Bay #31535

Re: Engine Hesitation, Momentary

Reply #28 –
Yahoo Message Number: 115327

Follow-up report.
Thank you all for your comments and suggestions. I learned a lot in the process.
Brian Schack, Engine Tech, suggested that I try a double dose of PS "Diesel Kleen" (2 quarts) to my next fuel fill-up. So, I tried this easy solution first.
Well, I do not know what this stuff did in the fuel system but, I am amazed. It worked as advertised!
My Cummins is back to her old self; purring along. No more hiccups.
Daron Hairabedian

Re: Engine Hesitation, Momentary

Reply #29 –
Yahoo Message Number: 115329
Thanks for closing the loop back on this.

Suggest a yearly does (Just like once a year I get a Nice Bottle of Scotch, vs the Boat-Scotch box we use normally (Cleans bugs of the windshield too!).

All kidding aside, it's an inexpensive yearly maintenance activity - consider in preventative insurance:)!

Travel safe, have fun,
Smitty
04 Allure Sold to a nice new owner! Now enjoying a 07 Magna Rembrandt 45' ISX600 #6775
"We're ONDROAD for THEJRNY!" (Toad and Coach license plates, say Hi if you see us!)

Re: Engine Hesitation, Momentary

Reply #30 –
Yahoo Message Number: 115330
Great! Yeah good stuff, I run it through my cat C-12 about every third fill-up or so. The rest of the time a little 2 cycle oil.

Sincerely

Alex Ritchey 2000 CC Affinity B&B



Re: Engine Hesitation, Momentary

Reply #31 –
Yahoo Message Number: 115331
Yes, good stuff. I add it on every fill-up. It's only $20 a bottle (250 gal treatment). When your fuel bill is $300-400, what's an extra $10...

Greg
06 Magna
2006 Magna Rembrandt C13
2016 Jeep GC toad

Re: Engine Hesitation, Momentary

Reply #32 –
Yahoo Message Number: 115332
Not a big deal, but I should have taken a bit more time before banging out my last post.

I carry PS Diesel Kleen's Bio Kleen, for in case I get a bad batch of fuel.

I use OptiLube (Usually Summer Blend) in each tank, and besides added lubricity for my CAPS era engine, it also helps keeping the injectors clean too. I also carry the XPD product, and will use that for cooler running times or humid location. Their XL product, has the highest lubricity, is added about every third to fourth tank.

While I feel the mix usage of Options Lube does a good job of normal of keeping the injectors clean. I do also do the below yearly Sea Foam! (As the added insurance I was speaking of...)

Once a year regimen, pick up enough Sea Foam to add to a full fill up. Then run that tank down to between 1/4 -1/3 from empty. (Usually time the yearly Sea Foam + or - a month from when Napa has them on sell...

I do like PS Diesel Kleen's products, but got in the habit of using Opti Lube, and just stayed with it:)!

Some like Coors, some like Coors Light, some like Budweiser, etc. - they all cool you down, and lubricate your mind... Suspect Opti-Lube vs Power Systems vs Sea Foam is sort the same thing. We get used to a product, and stick with it:)!

Best to all,
Smitty

04 Allure 31017
04 Allure Sold to a nice new owner! Now enjoying a 07 Magna Rembrandt 45' ISX600 #6775
"We're ONDROAD for THEJRNY!" (Toad and Coach license plates, say Hi if you see us!)