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I own a 1985 f150 302 and I’m having some problems with the carburetor. Pretty new to this.. so
When I purchased the truck I wasn’t aware it wasn’t the original carburetor for the truck.. I’m honestly not sure what kind of carb was on this truck..
Or all the problems, random wires i have uncovered since working on it. She’s a train wreck.
put a inline pump on it since I was having problems keeping the mechanical fuel pump primed.. and
I had a couple carbs around so I rebuilt a 2150.. Not easiest to start up but she’d start and run.. Problem is the choke would never fully open she would stay idled high, I noticed the in-line fuel pump had to much pressure for the carb so I went ahead and replaced the mechanical fuel pump... but after doing research I seen some threads about hot air choke with electric assist but... My truck has no hook up on the manifold.. The carburetor that was in the truck had some kind of electric wiring that screwed into the side of the carb right next to the speed idle screw... it had a hook up for it.. I haven’t tried to start her since the new fuel pump, I haven’t had time..
Any ideas on what to do next? Everything I’ve read has name so confused. I don’t even know where to start next.
I own a 1985 f150 302 and I’m having some problems with the carburetor. Pretty new to this.. so
When I purchased the truck I wasn’t aware it wasn’t the original carburetor for the truck.. I’m honestly not sure what kind of carb was on this truck..
Or all the problems, random wires i have uncovered since working on it. She’s a train wreck.
put a inline pump on it since I was having problems keeping the mechanical fuel pump primed.. and
I had a couple carbs around so I rebuilt a 2150.. Not easiest to start up but she’d start and run.. Problem is the choke would never fully open she would stay idled high, I noticed the in-line fuel pump had to much pressure for the carb so I went ahead and replaced the mechanical fuel pump... but after doing research I seen some threads about hot air choke with electric assist but... My truck has no hook up on the manifold.. The carburetor that was in the truck had some kind of electric wiring that screwed into the side of the carb right next to the speed idle screw... it had a hook up for it.. I haven’t tried to start her since the new fuel pump, I haven’t had time..
Any ideas on what to do next? Everything I’ve read has name so confused. I don’t even know where to start next.
Some pics of the mentioned items would help. And what did the 2150 come off that you rebuilt and installed ?
I’m not sure what they came off of I know some 302... Yeah not much help. This was the one on it when I got the truck but found out from a friend who knew the guy I bought the truck from that he let someone take the one that was in to and swap it for this one. This was the one I put in it and it worked great but the throttled never opened fully after running for over 20 mins
The carb with the TPS (throttle position sensor) is a feedback carb from an 83-84 302 with the AOD. Not overly-familiar with this unit as it was never used on Canadain spec trucks. IIRC it was an EEC system but without TFI. What colour is the strain relief on your ignition module blue or brown? See below for a pic of the ignition module.
The other one appears to be an over 6900 GVW carb. You picked the right one to use. As for the throttle hanging up either the kick down is hanging up or something in the choke assy is stopping things up. And it appears to be missing the choke housing in the pics.
If you can't find the silver box in the picture above, see if you have a rectangle looking module mounted to the side of the distributor. Take a picture of it also.
Ah, okay. Yeah i forgot to mention I removed some parts to go back over it to see if anything was wrong, haven’t put it back together yet. But it was working great. Besides it would never fully open I know it doesn’t have the silver box.
thanks for the reply’s it gives me some hope to fixing this truck, I’m going to check and see if it has one in the side of the distributor!
If you can't find the silver box in the picture above, see if you have a rectangle looking module mounted to the side of the distributor. Take a picture of it also.
Why are you making him run around in circles? NO TFI on the V8"s without fuel injection.
Ah, okay. Yeah i forgot to mention I removed some parts to go back over it to see if anything was wrong, haven’t put it back together yet. But it was working great. Besides it would never fully open I know it doesn’t have the silver box.
thanks for the reply’s it gives me some hope to fixing this truck, I’m going to check and see if it has one in the side of the distributor!
You have an EEC III system think of it like a very primitive Electronic Engine controls. You are likely going to have to do some retrofitting as pretty much all of the EEC III stuff is obsolete. It was only used for a couple years and was not common.
So the other carb that I picked to put in it will work? Even without the hot air stove I believe its called? Because there’s no hook up on the passenger side of the exhaust.. should I cap that off on the choke or leave it open? Will it work with just the alternator hooked to it? Sorry for the questions with all that messed up from the person before it just made it difficult to find what’s supposed to be hooked up where.. Do I still need to check the wire color? I believe it’s blue
You need to check if you actually have a duraspark ignition module. It will be mounted on the top of the driver's side inner fender.
If not the system is EEC III and the chances of the system working properly is almost zero.
EEC III was very short-lived and was only used on a handful of trucks with the 302 and AOD.
As for priming the pump you just need to wind the engine over, it will self-prime eventually provided there is fuel in the tanks and the pickup screen is not blocked. It may take couple mins of cranking to get fuel up to the pump.
You can try the other carb and see it works you never know you may get lucky and.the system may work.
If you have EEC III To swap it is going to be some work. The whole ignition system will need to be changed. This means swapping the distributor and adding an ignition module.
Or you can go to an aftermarket HEI dist (not my first choice) but it may be the easiest.
And the carbs will work without the heat stove. The heat stove was just there to help mitigate carb icing.
Why are you making him run around in circles? NO TFI on the V8"s without fuel injection.
I am asking because I don't know.
Matt the radiator sticker said it should be a feed back system so the dist. is different on a v8 than on the 300 six that has TFI?
Would the dist. be "locked" and the TFI be mounted on the fender well but just be a different box?
Sorry for the high jack
Moore could you post a picture of the left (always when sitting in the drivers seat) side inner fender well what might be bolted there.
Dave ----
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