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Posted 3 years ago

The answer of which system to use is;   ”It Depends…” (Note, the following information is taken from BAC Forum Technical...

 Common Problems / 2074 views

Posted 3 years ago

Dave, How important is it to get an oil sample done when changing oil? Dave's Answer: Oil samples are important...

 Ask Dave / 748 views

Posted 3 years ago

This is an old post on the Forum. We have had drains in our awnings for about 8 years now...

 Common Problems / 580 views

Posted 3 years ago

Absorption or Residential Refrigerator for my RV? If your factory supplied absorption refrigerator fails, you have a couple of options...

 Common Problems / 763 views

Posted 3 years ago

Question: Dave, I keep hearing about turbocharger problems on the 425HP C9 engine. Can you provide some information on this?...

 Ask Dave / 739 views

Posted 3 years ago

Dave, Why is inlet air to engine so important for optimal engine performance? Dave's Answer: A Cat engine requires unrestricted...

 Ask Dave / 586 views

Posted 3 years ago

Question: Dave, How does the Caterpillar Regen System Work on C9, C13, & C15 Engines   Dave's Answer: The Diesel...

 Ask Dave / 847 views

Posted 3 years ago

Dave, I bought an 08 Contessa in Dec. with a CAT C9. It had 4977 miles on it.  Had a...

 Ask Dave / 735 views

Posted 3 years ago

Question: What would cause an inconsistent rough or surging idle for a C9 400hp engine in our 07 Contessa? I...

 Ask Dave / 896 views

Posted 3 years ago

Dave, I have a 06 Beaver Patriot Thunder with the C13. It has a Racor 125gal/hr primary fuel filter and...

 Ask Dave / 687 views

Posted 2 years ago

Question: Water temperature gauge is not showing any temperature reading on my 2001 Patriot with a 3126B Engine. The needle...

 Ask Dave / 447 views

Posted 2 years ago

Dave, Why is it difficult for the C9 to maintain proper fuel flow and pressure with the original pump that...

 Ask Dave / 661 views

Posted 2 years ago

Question: Read on another forum that, according to a long-haul trucker, he would avoid using his Jake brake when over...

 Ask Dave / 720 views

Posted 2 years ago

Dave, The fan on my C12 is not coming at all, the receiver tank is (full) brand new steel tank...

 Ask Dave / 505 views

Posted 2 years ago

Question: Dave, Should I be using additives for fuel, oil or fuel?   Answer: Neither CAT nor Cummins recommend additives....

 Ask Dave / 524 views

Posted 2 years ago

Question: Dave, can you explain how the compression brake works?   Dave’s Answer: Author’s Notes: The following is taken from...

 Ask Dave / 457 views

Posted 2 years ago

The attached document from CAT explains the various components contributing to fuel mileage and the impact of each. Understanding CAT...

 Common Problems / 676 views

Posted 2 years ago

Question: Do you know where the coolant inlet/outlet goes to on a 10R-5407 water pump on my C9 #9DG07025? The...

 Ask Dave / 297 views

Posted 2 years ago

Question: What symptoms would a defective thermostat have in a Cat C-9 (07 Contessa with 150k miles).     Dave’s...

 Ask Dave / 287 views

Posted 2 years ago

Question: We have generated a low boost pressure 25 code 102-1 for the last several years while still generating 32...

 Ask Dave / 523 views

Posted 2 years ago

Dave, I’m losing power and getting a 164-11 code on my heui engine (3126/C7/C9). Dave’s Answer: When troubleshooting an injector...

 Ask Dave / 480 views

Posted 2 years ago

Question: Dave, if I have understood your posts, you have basically said that the valve lash adjustment is probably not...

 Ask Dave / 402 views

Posted 2 years ago

Question: The starter cranks my C12 with no problem but it won’t fire. What could cause this?   Dave’s Answer:...

 Ask Dave / 620 views

Posted 2 years ago

Question: I have been told by a Cat mechanic to change the oil in our C 9 400 hp every...

 Ask Dave / 369 views

Posted 2 years ago

Dave, Should I use starting fluid when my engine doesn’t want to start?   Dave’s Answer: Recently I was contacted...

 Ask Dave / 239 views