Ask Dave

If you would like to submit a question to Dave Atherton, you will find a link in the members only section of the BAC Forum.  Join the Beaver Ambassador Club and you can submit any question relating to your Beaver Coach to the Beaver Forum community.”

You will find the BAC forum here    BAC Forum

Please note; the Ask Dave area is for questions about Caterpillar Engines only, questions on other subjects should be asked on the BAC Forum.

Questions for Dave Atherton.

39 item(s) found

Oil Sample

Popular 

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 / 747 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 / 738 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 / 846 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

C9 Rough Idle

Popular 

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 / 659 views

Exhaust Brake Use

Popular 

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 / 719 views

Fan Not Running

Popular 

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 / 523 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

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

Failing Thermostat

Popular 

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 / 286 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 / 479 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 / 401 views

C12 Won’t Start

Popular 

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 / 618 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 / 368 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

Posted 1 year ago

Question: 1988 Beaver C12 425 hp. I was having low power issues and noticed sediment and cloudy fuel in the...

 Ask Dave / 190 views

Posted 1 year ago

Question: Hi Dave, A week ago my engine began to be harder to start and made a white smoke. I...

 Ask Dave / 205 views

Posted 1 year ago

Question: Dave, in your forum post, you made mention of alternatives to the hard to get hydraulic fan. Could you...

 Ask Dave / 172 views

C12 ECM Upgrades

Popular 

Posted 1 year ago

Question: I have a 2000 Beaver Marquis with the CAT C12 with 58000 miles. I am wondering would I benefit...

 Ask Dave / 186 views

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