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1983 e350: revs..neutral..plgs wires, rotor and cap, and the coil…

Customer Question
I have a 1983 e350...
I have a 1983 e350 class c motorhome with a 460 in it. it starts and idles fine, revs fine in neutral but when i drive it it has no power, max 80 km/hr, thengine bogs down. I have ereplaced the plgs wires, rotor and cap, and the coil so i do not think it is ignition. this seems to be intermittant and is not dependant on which fuel tank so I dont think it is an electric fuel pump problem
Submitted: 8 years ago.Category: RV
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Answered in 1 hour by:
6/25/2010
RV Mechanic: RIP ROBERT, R.V. TECH & MECHANIC replied 8 years ago
RIP ROBERT
RIP ROBERT, R.V. TECH & MECHANIC
Category: RV
Satisfied Customers: 783
Experience: 35 plus years HANDS ON WORK TROUBLE SHOOTING & REPAIRS
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HI;

DID THIS VEHICLE HAPPEN TO SET FOR A LONG PERIOD OF TIME, WITHOUT BEING USED? IS THERE ANYTHING THAT YOU CAN REMEMBER THAT HAPPENED BEFORE YOU STARTED HAVING THIS PROBLEM? ANYTHING AT ALL MAY HELP. DOES THE ENGINE RUN SMOOTH? YOU HAVE A GREAT DAY. THANK YOU FOR USING JUST ANSWER.

THANK YOU,

RIP ROBERT
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Customer reply replied 8 years ago
it sat over the winter, stored inside but not heated, used gas stabilizer in both tanks before storage, engine runs smooth in park and at idle but bogs down under load
RV Mechanic: RIP ROBERT, R.V. TECH & MECHANIC replied 8 years ago
HI;

THE ONLY THING I CAN THINK OF IS THAT THE CARB MAY NEED TO BE CLEANED OUT. CHECK THAT THE VACUUM ADVANCE IS WORKING. YOU NEED TO CHECK AND REPLACE FUEL FILTERS. THE FORD GENERALLY HAS A SCREW ON CANISTER FILTER
INSIDE THE FRAME.
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Customer reply replied 8 years ago

there is a fuel filter on the inlet to the carb, should there be another one?

RV Mechanic: RIP ROBERT, R.V. TECH & MECHANIC replied 8 years ago
HI;

THERE IS GENERALY A CANISTER TYPE FILTER MOUNTED IN SIDE THE FRAME. YOU'LL HAVE TO CRAWL UNDER THE COACH TO SEE. I AM SENDING YOU A PICTURE OF THE REPLACEMENT FILTER AND THE SCREW ON CANISTER TO LOOK FOR.

THANK YOU,

RIP ROBERTgraphicgraphic
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