Road trip blues
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07-01-2006, 13:12
Post: #11
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Road trip blues
True enough. In this case the diagnosis was correct and the custom filter
required waiting for a replacement to be shipped in. Once the new filter was installed, back to normal. The filter was not cheap--$82. The plugged up filter was increasing the vacuum so much at the turbo intake, it was collapsing a rubber 90 degree hose that is part of the aftermarket intake. It was only happening when the rpm's increased suddenly when I downshifted from 4th to 3rd on a hill. The slow increase in vacuum on a steady increase in rpm's as i shifted up thru the gears was not enough to cause the problem, although the dirty filter was reducing the power. I don't think the problem would ever arise on an NA and I don't think the factory turbo has any rubber components in the intake system that might collapse. Kerry --- In WanderlodgeForum@yahoogroups.com, "Mike Hohnstein" <MHOHNSTEIN@...> wrote: > > Keep in mind Kerry has an aftermarket turbo conversion applied to a NA 210 hp. I suspect there is a fair bit of "custom" work done to the coach that complicates maintenance issues when they arise. > Fresh properly adjusted belts,new hoses, proper cooling system ph level and a clean fuel system are the best ways to stay off the side of the road. > Mike Hohnstein > Germantown, WI > 83FC35 > ----- Original Message ----- > From: Chris Reed > To: WanderlodgeForum@yahoogroups.com > Sent: Monday, June 26, 2006 10:31 PM > Subject: Re: [WanderlodgeForum] Re: Road trip blues > > > Aside from belts and hoses, what else can I do as far as preventive maintenance to make sure I dont end up on the side of the road....I can't imagine going through what Kerry is now....what else should I be checking under this bus? > Chris Reed > 83 FC35 SB > Plant City, FL > Waiting for new/rebuild engine cooling fan.... > > davidkerryedwards > Crossover pipe takes the exhaust from one manifold over to join up with the exhaust from > the other. In my case it takes the right exhaust over to the left side where both power the > turbo. It broke on the left side right near the intake for the air cleaner which is in front of > the left wheel. I had to drive it a couple of miles to an exit and it was spewing huge clouds > of black smoke because the turbo was barely turning since the exhaust from both sides > was following the path of least resistance which was out of the broken pipe instead of thru > the turbo. Without the turbo'd air it was way overfueled for the amount of air it was > getting. > By the way, it is probably worth noting that the crossover pipe had probably cracked > before it broke resulting in less air and I had noticed the egt's were running about 150 > degrees hotter than normal. They could get over 1200 degrees if I wasn't careful on a > steep hill. This tells me a richer or overfueled engine could have dangerous EGT levels > pretty easily. > > Kerry > > --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" <sforman@> wrote: > > > > OK...dumb question...what/where is a "crossover pipe"? > > > > Scott Forman > > 82 FC35RB > > Memphis > > > > --- In WanderlodgeForum@yahoogroups.com, "davidkerryedwards" > > > > > > > > This roadtrip is turning into a sequence of mechanical problems. > > After we got the idler > > > pulley repaired in MO, we made it to WV when the crossover pipe (a > > second rate flexible > > > pipe) failed. FMCA road service sent out a mechanic who removed > > the broken end and re > > > attached it. We got down the road 40 miles and it failed again,. > > I reattached it myself and > > > we limped into Cumberland MD on Saturday where we waited until this > > morning(in a > > > shopping mall parking lot) for an exhaust shop to open. Jim's > > transmissionn and exhaust > > > did an excellent quick job and we were on the road by 11am. A mile > > down the road the > > > engine quit suddenly at 60mph. Pulled over, restarted it and set > > off again. this happened > > > three times in 5 miles. I called FMCA road service again since it > > was dangerous to drive > > > since we lost power steering when the engine quit. Were towed to > > Keyser WV ($431--buy > > > road service!) where we are currently in a motel. The current > > diagnosis is that when the > > > crossover pipe failed it sooted up the air cleaner resulting in > > very high vacuum in the > > > intake which sucked down a rubber hose cutting off all air flow to > > the engine and shutting > > > it down. We're waiting for a new air filter to arrive by UPS > > tomorrow. I had thought the > > > turbo was failing and seizing up, so if this diagnosis is correct, > > it's a much more simple > > > fix. The diagnosis makes a fair amount of sense since the shut > > down problems occured > > > after the crossover pipe was properly fixed with a solid pipe which > > would make the turbo > > > operate more efficiently than the loosely attached prior repair. > > > We hope to make it to DC sometime this summer and then have a less > > eventful journey up > > > to NYC, Montreal, and back to Denver. > > > If anyone has any better diagnoses, jump in. The air filter is > > within a couple of feet of the > > > ccrossover pipe and it was completely black when removed. Apart > > from a turbo failing, I > > > can't think of any other explanation. It definitely had fuel since > > the max fuel light was on > > > when it happened and it shot out lots of gray smoke upon start up. > > The only other thing > > > that could seem to cause a diesel to stop running is lack of > > compression, lack of timing, or > > > lack of air. > > > > > > Kerry > > > 82 FC 35 > > > Denver > > > Singing the blues in WV (or should that be bluegrass?) > > > > > > > [Non-text portions of this message have been removed] > > > > > > [Non-text portions of this message have been removed] > |
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