Re: trouble shooting help needed on 833
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Forum Ambassador
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A possibly useful diagnostic would be to know the manifold vacuum at idle.
Fuel supply and carburetion would still be my primary suspects but have you checked to see if your distributor centrifugal advance is functioning? And of course you should check the timing.
Posted on: 2017/8/24 8:15
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Re: trouble shooting help needed on 833
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Home away from home
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the vacuum on the intake is a consistent -25, which i assume is good.
The distributor seems fine, but I do have a replacement that I plan to try this evening. The fuel inlet pressure is between 2 and 2.5. We did play with the timing last night and I could see no change.
Posted on: 2017/8/24 9:12
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1925 333 Phaeton
1926 Phantom 1 Rolls Royce 1926 Hudon super six Coupe 1927 Peerless Roadster 1927 433 7 passenger limo 1928 Peerless coupe 1929 Peerless Boatail coupe 1929 Phantom I Rolls Royce 1930 Springfield Phantom 1 Regent 1931 L-29 Cord 1931 833 Convertible 1931 833 Opera Coupe 1934 Phantom 11 Rolls Royce 1934 1101 Roadster 1934 1101 Coupe 1934 V12 Opera coupe 1936 120 |
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Re: trouble shooting help needed on 833
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Forum Ambassador
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Thanks for the added info, but something questionable on the manifold vacuum, typical value for an engine in good condition at idle is a steady 18-20.
Posted on: 2017/8/24 9:16
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Re: trouble shooting help needed on 833
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Home away from home
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Ill recheck that, but I do recall it being around 24-25, it would seem that it being that high would mean that the engine is tighter than normal.
Posted on: 2017/8/24 9:37
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1925 333 Phaeton
1926 Phantom 1 Rolls Royce 1926 Hudon super six Coupe 1927 Peerless Roadster 1927 433 7 passenger limo 1928 Peerless coupe 1929 Peerless Boatail coupe 1929 Phantom I Rolls Royce 1930 Springfield Phantom 1 Regent 1931 L-29 Cord 1931 833 Convertible 1931 833 Opera Coupe 1934 Phantom 11 Rolls Royce 1934 1101 Roadster 1934 1101 Coupe 1934 V12 Opera coupe 1936 120 |
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Re: trouble shooting help needed on 833
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Forum Ambassador
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I've not heard of even a fresh, tight engine giving more than 21 inches of vacuum at idle. I suspect either your gauge is incorrect, or there is some sort of clue in that reading that I can't interpret but needs to be understood.
You are running a Detroit Lubricator, right?
Posted on: 2017/8/24 10:12
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Re: trouble shooting help needed on 833
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Home away from home
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yes model 51
Posted on: 2017/8/24 10:24
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1925 333 Phaeton
1926 Phantom 1 Rolls Royce 1926 Hudon super six Coupe 1927 Peerless Roadster 1927 433 7 passenger limo 1928 Peerless coupe 1929 Peerless Boatail coupe 1929 Phantom I Rolls Royce 1930 Springfield Phantom 1 Regent 1931 L-29 Cord 1931 833 Convertible 1931 833 Opera Coupe 1934 Phantom 11 Rolls Royce 1934 1101 Roadster 1934 1101 Coupe 1934 V12 Opera coupe 1936 120 |
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Re: trouble shooting help needed on 833
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Home away from home
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Partial flow restriction in the exhaust system. This can be caused by partial collapse inside muffler or the heat riser valve froze in the closed position.
Posted on: 2017/8/24 17:59
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Re: trouble shooting help needed on 833
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Home away from home
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Just wanted to let you guys know we have found out that evidently the car has jumped time at some point and thus it would idle beautifully but would die when you tried to gun it.
the way we found it was I put a 1932 distributor on the car which allowed me to turn it further left and right and EUREKA, it reved up and seemed to run fine. Now I need some input about getting it back in time, seems its probably slipped one or two chain links. Hope this will benefit others who may have the same issues! thanks Barry 336-516-7009
Posted on: 2017/8/25 19:47
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1925 333 Phaeton
1926 Phantom 1 Rolls Royce 1926 Hudon super six Coupe 1927 Peerless Roadster 1927 433 7 passenger limo 1928 Peerless coupe 1929 Peerless Boatail coupe 1929 Phantom I Rolls Royce 1930 Springfield Phantom 1 Regent 1931 L-29 Cord 1931 833 Convertible 1931 833 Opera Coupe 1934 Phantom 11 Rolls Royce 1934 1101 Roadster 1934 1101 Coupe 1934 V12 Opera coupe 1936 120 |
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