| Author | Message | ||
| Tim Brandt (Timb)
Registered Member Username: Timb Post Number: 167 Registered: 10-2003 Posted From: 74.244.14.221  Rating: N/A |
I was noticing today after an extended drive in my coach (6-71 4 valve) when I would get off the highway and push in the clutch my RPM's would hang at about 1000 for several seconds before dropping back into a 400-500 RPM roll. Any idea what would cause this? Is it something to worry about? This is my first detroit so I haven't learned what's normal or not yet. I was concerned about maybe sucking some oil from a bad blower seal but my dipstick hasn't changed in the last 500 miles. I do have a bit of an oil seep where the waterpump bolts to the blower but like I said not enough to cause the level to drop just make things around it a little messy. Teach me your experiences I am all ears. Also I am planning a 3000 mile trip the end of June so I need to know if I need to address this prior Thanks Tim | ||
| JC Alacoque (Jc_alacoque)
Registered Member Username: Jc_alacoque Post Number: 63 Registered: 7-2006 Posted From: 72.45.68.242 Rating: |
I would disconnect the linkage at the governor. Operate the governor by hand to see if it returns to iddle normally. Then you can tell if the hang up is in the linkages or pedal or in the governor or at the rack in the head. Something is rubbing somewhere, you just have to find it. JC | ||
| George M. Todd (George_mc6)
Registered Member Username: George_mc6 Post Number: 441 Registered: 8-2006 Posted From: 207.231.75.253 Rating: N/A |
Tim, JC has my vote, you have something sticking, or a broken return spring. A while back, with the same type problem on an Eagle, John (MC9) wrote:"Make sure return spring is 1. There 2. Connected." Try and work the linkage from the back, and see if it moves freely. If it doesn't, apply grease or oil at pivot points, front to back, you will find the problem somewhere inbetween. George | ||
| Tim Brandt (Timb)
Registered Member Username: Timb Post Number: 168 Registered: 10-2003 Posted From: 74.244.14.221 Rating: N/A |
Thanks guys. That makes sense and since the throttle is operated by rods from the front I could cetainly see there is a lot of potential for rubbing as it passes through each bulkhead | ||
| Douglas Wotring (Tekebird)
Registered Member Username: Tekebird Post Number: 339 Registered: 10-2004 Posted From: 71.59.75.212 Rating: N/A |
there is also a bushing on the belcrank on the gov....known to deteriorate and get fiberous ( made out of nylon) which will cause this. | ||
| john w. roan (Chessie4905)
Registered Member Username: Chessie4905 Post Number: 1136 Registered: 10-2003 Posted From: 71.58.48.228  Rating: N/A |
Does your bell crank,s have grease fittings on them for lubrication? Check linkage up at driver's end of coach for rust, corrosion, or lack of lubrication. |
