I am buying a 1983 Dodge D150 Slant 6, 4 speed engine. Manual transmission, it will only start if you pour gas in carburator. Seller says it needs a new carb. Sounds to me it is a fuel pump issue. Seller nor I are a mechanic.
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I'm not sure, it's been a while but I think it's a 2 barrel. Take the breather off and look down inside the carb. There will be 1 or 2 "holes" going down, these are the barrels. Putting a larger carb on it will require an adapter plate. I do recall back in the 80's seeing an adapter plate for a 4 barrel for a slant 6. Probably your best bet would be to get in touch with a company like "Summit Racing" and see what they have available.
The great Dodge slant 6 engine...these were very strong and dependable, i put 300,000 on a 1985 D100 and it was still going strong when i sold it. Your transmission is a "883" Chrysler began using "833" four speeds in passenger cars in 1964. The
transmission was designed by Chrysler and manufactured by New Process Gear Co.
Chrysler installed the 833 four speed behind the Slant Six at two different
times. The first production four speed slant sixes were the 1964-66 A-body four
speed cars. The second run of production four speed slant sixes began in 1975
with the release of the Overdrive A-833. From 1975 until 1987 the Overdrive four
speed was installed in slant six applications of A-bodies, F-bodies, and light
trucks (D100 & D200 series trucks). These applications were not ultra rare,
but the slant six four speed production figures pale in comparison to the number
of V8 cars that received A-833 four speeds. Since the A-833s installed behind
slant sixes were basically the same transmissions installed in the V8 cars, a
slant six owner looking to install an A-833 should be familiar with all the
A-833s produced, including the ones used behind V8s...There are several characteristics of the various A-833s that determine which
four speeds fit in which chassis and with which engines. For the passenger cars,
Chrysler manufactured two different length four speeds. The A/F-bodies received
a short tailshaft A-833 and the B/C/E-bodies received a long tailshaft A-833.
This difference is obvious when one of each type is sitting side by side, but
either type is easily identified when it happens to be a stand alone unit.
If you are looking to replace your truck tranny, you will need to find another one out of a truck that had the slant 6 engine for it to be a direct bolt up. Chrysler made several variations.
1975 thru 1987 Overdrive 3.09:1 - 1.67:1 - 1:1 - 0.73:1 (Trucks used a 0.71:1
If you go to AutoZone.com and register (free) you can nagivate your way to the "repair info" section. Once there look at the list in the center of the page and click on "emission controls:, after that look on the left side of the page for "VACUUM DIAGRAMS". the proper vacuum diagram should be there for your truck.
Check all of the fuel lines very carefully for breaks or cracks in the fuel lines, especially between the fuel tank and the fuel pump.
If the fuel lines are all in good condition then you can safely assume that the problem is in the fuel pump and you will need to replace it. (If the fuel pump is in really bad shape the engine oil on the end of the engine oil dip-stick will smell like fuel)
Sounds like vapor lock. In laymans terms the engine heat causes the fuel flow to stop. Once everything cools off the truck starts. Insulating around the fuel line seems to be the solution. Try aluminum foil. Or perhaps a reroute of the fuel line to get it away from direct engine heat.