Has anyone seen this set up before?
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Has anyone seen this set up before?
I have been having engine troubles with my 3.9l. While researching info on the fuel system I became confused. All the manuals say that 3.9l are MPF but my truck has clearly no fuel rail. The fuel line goes into the TB at the back just like the 2.5l.
Has anyone seen this set-up before? Or is it just a weird Canadian truck. Cause the VIN indicates that it should be MPF.
Cheers
Has anyone seen this set-up before? Or is it just a weird Canadian truck. Cause the VIN indicates that it should be MPF.
Cheers
Amateur
Joined: Sep 2006
Posts: 29
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Information from Allpar.com
In 1987, its first year, the 3.9 used Holley 6280 two-barrel feedback carburetors. This setup may have lasted into 1988 on Dakotas, but then Dodge slapped an EFI 2-barrel intake and induction on the 318 and the 3.9. They shared a Holley throttle body, until the Magnum versions, and used a non-vacuum advance distributor.
The fuel injection from 1988 to 1991 was single-point, central fuel injection; gas was injected into the throttle body. This system was relatively inefficient, but still easier to control and maintain than a carburetor; replacing it with a modern multiple-port injection system in 1992 resulted in a power boost (though since the heads and other parts were upgraded at the same time, partly for more interchangeability with the 318, it's hard to isolate the effect of the better injection system).
I thought dakota's went from Carbs straight to MPFI. I own a 1994, learn something everyday.
In 1987, its first year, the 3.9 used Holley 6280 two-barrel feedback carburetors. This setup may have lasted into 1988 on Dakotas, but then Dodge slapped an EFI 2-barrel intake and induction on the 318 and the 3.9. They shared a Holley throttle body, until the Magnum versions, and used a non-vacuum advance distributor.
The fuel injection from 1988 to 1991 was single-point, central fuel injection; gas was injected into the throttle body. This system was relatively inefficient, but still easier to control and maintain than a carburetor; replacing it with a modern multiple-port injection system in 1992 resulted in a power boost (though since the heads and other parts were upgraded at the same time, partly for more interchangeability with the 318, it's hard to isolate the effect of the better injection system).
I thought dakota's went from Carbs straight to MPFI. I own a 1994, learn something everyday.
