General Boards > Technical Support
C-9 Flames out at low speeds
Bob Dunlap:
Thanks Richard,
I will give that a try.
I made it home to the Texas Hill Country on Thursday but with several scary episodes. The anomaly became so frequent that it even occurred at freeway speeds without warning. I was passing a slow-moving semi when the gremlin attacked. Fortunately, there was no traffic behind me or behind the semi and I was able to pull over to the shoulder and shut it down. After 20 or so attempts it started and ran fine for another 100 miles. I took it to a Holt Truck Center in Longview, TX where I was told the codes suggested it was an oil pump sensor. He would have changed it right then and there, but didn't have lift space to get it up high enough to pull the starter and access the sensor. Good thing I "limped" home and didn't get that done as it might have been leading me in the wrong direction. Are the modifications you suggest something I can do in my garage, or do I need to take it to a shop? I'm pretty capable and have tools for most everything.
Richard Davis:
Bob! The primer pump upgrade is a relatively straight forward upgrade. After ordering all the parts from the parts list, I did the install in my driveway. There is a nice write-up in the Technical tab section under Common Problems along with a parts list. If you have not been there, you must log in to the main BAC web site (link in bold on the upper right of the BAC forum page). Click on the Technical tab and then the Common Problems tab and then the CAT fuel priming item. Reading the installation write-up will let you know if it is something you want to tackle yourself. The only downside is that the CAT parts are very expensive. I was tempted to install a generic electric fuel pump to save some money, but decided to bite the bullet and use the recommended CAT parts. It has worked well for me. It has been 5 years and I have had no issues with the system. Good luck and I hope you can get your problem solved. I have no idea if my problems were caused by low fuel pressure or if they were caused by air intrusion in the fuel. Dave Atherton has some troubleshooting instructions somewhere that use a clear fuel line instream to allow you to see if you have air in the system. I decided rather than doing that, I would replace as many of the original plastic fittings as I could get to with brass compression fittings. It all worked for me, I hope it does for you as well.
Richard
Bob Dunlap:
Thanks Richard,
You've been very helpful. I have a very large garage and can perform most anything there. I'll see if I can locate the instructions you mentioned and go from there.
Bob
Bob Dunlap:
Richard,
Please clarify for me which component is being replaced by the Cat fuel priming pump. Richard's article says it replaces the existing primary fuel filter, and you said it replaces the original water separator. The photo in Richard's article shows orientation in the Contessa, and I don't see anything familiar in my Monterey. Help!
Richard Davis:
Bob,
I think you are confusing yourself. The water separator IS the primary fuel filter. It is where the fuel is first filtered (primary). On your Monterey it should be located in the battery storage bay right behind the battery tray. I installed the CAT priming pump in its place and ran the wires thru an existing wiring hole into the electrical component cabinet above the batteries. I installed the Smakn voltage converter there next to the Big Boy for convenient electrical hookup. Hope that makes sense.
Richard
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