Kerry: the engine stalling could be plugged fuel filters, low fuel pump pressure, improper governor adjustment, sticky rack on one injector, possible water contamination, improper stop setup with the rack being pulled out of the run mode, plugged return line at the cylinder head. It will require a tech to look at the problems. Fuel pressure should be checked at idle and full rpm for a reading or 15 to 20 psi at idle and 70 psi at maximum rpm to eliminate the fuel pump as the relief valve could be acting up in the fuel pump. The sticking rack can be located individually with the valve cover removed and the racks, if they are the new spring loaded types, can be pushed in manually and can be checked for binding in the injector body. Check the fuel return as it indicates a problem in the suction side if the return rate is below DDA specs which is .9 of a gallon in one minute at 1200 rpm. You can also check for air in the return fuel with the return line in a clear container and see if air is getting in the system. Check to make sure the stop lever is not pulling the governor stop lever out of full fuel which can cause a problem at idle. Just some ideas from a Detroit Diesel tech. Hope it helps
Roger ----- Original Message ----- From: Kerry Lebel <[email protected]> Date: Monday, June 28, 2010 9:52 am Subject: Re: [UnifliteWorld] Detroit 6-71 weird stalling To: [email protected] > Interesting. I have three tanks on the boat. I run > port tank to port > engine and starboard tank to starboard engine. The center > take I use for > the genset and when the side tanks get low. How to you > diagnose a blockage? > > On Mon, Jun 28, 2010 at 9:49 AM, Monty Montaine > <[email protected]>wrote: > > My experience with a similar story when using my centre > fuel tank, the > > cross over return line was not open and it needs to be when > operating only > > from the one centre tank. > > > > Sounds to me like a there is a blockage and once it sits for a > while it > > will equalize...I’m not a formal mechanic, back yard mechanic. > > > > > > > > *From:* [email protected] [mailto: > > [email protected]] *On Behalf Of *Kerry Lebel > > *Sent:* June-28-10 9:02 AM > > *To:* [email protected] > > *Subject:* [UnifliteWorld] Detroit 6-71 weird stalling > > > > > > > > Hey All, > > > > > > > > I have a weird issue going on. My Detroit's run like a > top. I put the > > block heaters on for about 30 min and they fire right > up. They run smooth > > underway as well. The port side engine is acting up > though when I pull into > > the slip. When I am at no wake speed coming into the > harbor, she moves > > right along. The first time that I toss the port drive > in reverse to > > maneuver into my slip it will die. It then will NOT fire > back up. So I end > > up coming back into the slip on one engine. I am not > good at this. It > > takes a fun day trip and ends it on a stressful note. > When I try to restart > > the engine, it BARELY turns over, if at all. If I come > out the next > > morning, it fires right back up fine. I have had my > starter battery tested > > and it is fine. My voltmeters are showing that the > alternators are charging > > just fine as well. Anyone have any ideas? I could > use some ideas. > > > > > > > > Thanks, > > > > > > Kerry > > > > -- > > You received this message because you are subscribed to the > Google Groups > > "UnifliteWorld" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > > [email protected]<unifliteworld%[email protected]>> > . > > For more options, visit this group at > > http://groups.google.com/group/unifliteworld?hl=en. > > > > ------------------------------ > > IMPORTANT NOTICE: > > This email message is intended only for the use of the > individual or entity > > to which it is addressed, and may contain privileged or confidential > > information. If you are not the intended recipient, you are > hereby notified > > that any dissemination, distribution, copying or other use of > this email > > message is strictly prohibited. If you have received this > email message in > > error, please notify Global Securities Corporation (“Global”) > immediately at > > 604-443-5400. Due to the risks involved in sending information > over the > > Internet, Global cannot be held responsible for ensuring the > confidentiality> of this email message, or that it will reach > it’s intended recipient. Unless > > Global agrees otherwise in writing, Global cannot accept any > securities or > > futures orders provided to it via email as the receipt, timely > receipt or > > opening of email messages cannot be assured, and such orders > may not be > > executable if they contain errors or omissions. > > > > -- > > You received this message because you are subscribed to the > Google Groups > > "UnifliteWorld" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > > [email protected]<unifliteworld%[email protected]>> > . > > For more options, visit this group at > > http://groups.google.com/group/unifliteworld?hl=en. > > > > -- > You received this message because you are subscribed to the > Google Groups "UnifliteWorld" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected] more options, > visit this group at > http://groups.google.com/group/unifliteworld?hl=en. > -- You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en.
