Re: No Oil Pressure in Need of Mechanic Reply #50 – June 01, 2022, 05:48:30 pm From Hatteras Owners Forum & GalleryRe: Chasing DD 6v92 oil leakThis is usually what I do any time I'm chasing down an oil leak. I expose the area that seems to be the suspect area. Then clean it up real well with carb or brake cleaner. Keep the area well ventilated. This stuff works great. Cleans EVERYTHING. Once everything is clean, I'll tighten every bolt in sight start her up and go from there.Chasing DD 6v92 oil leak - Page 2 Quote Selected 1 Likes
Re: No Oil Pressure in Need of Mechanic Reply #51 – June 01, 2022, 06:23:03 pm Like Dakota Slim says above, it's not that hard to tell where the oil is coming from. OK, did you stick the oil lever after the engine shut down and what was the level? If down, did you add oil and try to start it? What happened, did it start? Did you look under the dash top to read the codes as was suggested? If so, what codes were shown? There are a lot of experienced coach owners on this forum and can help you diagnose and solve most any problem but we need you to follow through with some of the basics suggested to be able to help. Otherwise, we are just helpless bystanders and can only watch with regret as the shop costs add up. We WANT you to avoid any needless shop costs if at all possible. It's as frustrating for us as for you. Please provide as many details as you can.Pierce Quote Selected 2 Likes
Re: No Oil Pressure in Need of Mechanic Reply #52 – June 01, 2022, 07:11:50 pm Hopefully scrouch can get his coach back on the road. It's not a pleasant experience to break down anywhere, let alone on a highway miles from home. Those of us who have followed this want to see a successful solution. In the future, others can learn from this dilemma Quote Selected 2 Likes
Re: No Oil Pressure in Need of Mechanic Reply #53 – June 01, 2022, 08:12:07 pm Agree with Pierce again,Scrouch seems to be answering most of the questions and giving us updates,Pierce is right,it's frustratingfor us too,too many times Iv'e asked questions so I can help and the question is never answered or after the first post you never hear again. Quote Selected 1 Likes
Re: No Oil Pressure in Need of Mechanic Reply #54 – June 02, 2022, 12:46:25 am Quote from: scrouch – June 01, 2022, 01:57:29 pmUpdate: The supercharger has to be taken off to find the leak. I'm told 10-20 hours of work and the leak is significant.Supercharger? You mean turbo?Finding the leak can be easy or hard. After ensuring the engine has oil, get some brake cleaner and blue shop towels and start cleaning. Oh and some tooth brushes. You may possibly need degreaser if it's caked on. Scrub it clean, then start the engine and see where it comes from. More than likely, it is a gasket or seal or a hole in a hose. Gaskets/seals are normally pretty inexpensive. Some hoses cane be pricey, think hydraulic hoses for example. There's a lot of knowledge on here as stated, and are here to help. Heck, perhaps someone who knows this engine would even FaceTime you and help you some. Keep us posted Quote Selected
Re: No Oil Pressure in Need of Mechanic Reply #55 – June 02, 2022, 06:59:54 am Quote from: Jason – June 02, 2022, 12:46:25 amSupercharger? You mean turbo?The 2-stroke Detroit diesels can have both but must have a roots type blower for charge air. Whereas a 4-stoke engine goes suck squeeze boom blow, the two stroke goes boom blow, boom blow. Quote Selected 2 Likes
Re: No Oil Pressure in Need of Mechanic Reply #56 – June 02, 2022, 10:25:09 am Quote from: Jason – June 02, 2022, 12:46:25 amSupercharger? You mean turbo?Keep us posted This type of 2 cycle has to have positive pressure on the cylinders to fire, unlike a motorcycle or chainsaw two cycle. The term supercharger is actually correct in that is provides positive pressure as used in MW Dictionary: : over and above : higher in quantity, quality, or degree than : more than. So, instead of using a specially designed exhaust system to maximize power in a narrow band at high RPM, it allows engines to produce lots of torque at low RPM. This is much like the famous Deuce, GM's railroad 2-71 generator producing electricity at 1200 RPM. This is also why big ships usually have 2 cycle engines as they produce a lot of power at low RPM and are the only diesels to even come closes to 50% efficiency (51%). The extra 10% or so advantage over a 4 cycle is gained by eliminating the roots style blower and replacing it with electric forced induction much like the later EMD diesels on the railroad locomotives with turbos spooled up electrically to start. A turbocharger supplies the "free" additional air once the diesel is producing power.But the term "blower" is the most common term used for the Roots form of pressure induction with supercharge left to the drag strip where the supercharger/blower is turned at high rpm (for a Roots blower) to produce lots of pressure and horsepower. So, our Detroit 6V-92TA has both a blower and a turbocharger with the intercooler/CAC now sandwiched under the Roots blower to cool the incoming air. Since it is after the blower and turbocharger, it is now called an "aftercooler." Detroits may be ordered with the conventional intercooler or the aftercooler type. The aftercooler is liquid cooled and more efficient but costs more. It also means that there are no exterior plumbing or air radiator devices and since the Detroit 2 cycle has no injection pump but rater unit injectors, there is not much on the outside of the engine which gives it the clean appearance. In bus duty, all the drive belts are also eliminated with accessories driven off gears inside the engine. Turbochargers are also available in liquid cooled versions but not normally found in OTR diesels. The turbo and the blower can be pulled off the Detroit in less than an hour, not the 10-20 hours quoted. Pierce Quote Selected 8 Likes
Re: No Oil Pressure in Need of Mechanic Reply #57 – June 02, 2022, 07:36:35 pm Stewart and Stevenson works on Detroit's. If one near you give them a call. Quote Selected
Re: No Oil Pressure in Need of Mechanic Reply #58 – June 07, 2022, 12:07:32 pm Update: They think they have found the link and a blower installation gasket kit has been ordered to (hopefully) fix it. Quote Selected 4 Likes
Topic: No Oil Pressure in Need of Mechanic