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Derek Rutledge
Derek Rutledge Posted on Jun 10, 2012
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F150 choke thermostat has sparks what is the problem

The carburetor on my ford f150 302 engine 2 barrel carb choke is sticking after cleaning all parts and sparks are coming from side where choke thermostat is located

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fordexpert

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  • Ford Master 5,692 Answers
  • Posted on Jun 10, 2012
fordexpert
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Joined: Apr 20, 2009
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I would disconnect the electric feed from this choke unit. Sparks and fuel vapor are a bad combination. The heating element inside the black choke cover is shorted.

You should be able to get a new element at an autoparts store. Make sure you position the choke spring properly on the lever inside the case. Some use a loop in the spring to fit over the lever and some have a spring which fits between the small slot in the lever.

As for the sticking, check the action without the choke spring attached. The unloader in the choke system has a small piston which is drawn by vacuum. The rebuild instructions mention how to adjust or clean this passage.

I hope my solution is helpful.

5 Related Answers

Anonymous

  • 1776 Answers
  • Posted on Aug 09, 2009

SOURCE: need a vacuum diagram for a ford f-100 with a 302

Check out the autozone.com website and register the truck. It's free and will give you access to an online repair manual for the truck. See if the vacuum diagrams are available there. Hope this helped and best wishes.

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Anonymous

  • 129 Answers
  • Posted on Dec 19, 2008

SOURCE: Size of valve springs fo 289 ford engine with 302 heads

its not that easy here are some of the things u need to know

* solid or hyd cam
* roller or flat tappet
* valve installed hieght
* rocker ratio
* cam lift

this is just a few things go to a head shop and they will choose the right ones

Anonymous

  • 3600 Answers
  • Posted on May 28, 2009

SOURCE: Idle Screw location on 1984 Ford F150 302...

it has a metal cap on it and has to be drilled out and ajusted by a licenced mechanic if your talking about the fuel mixture for the idel it's on the cabe near the body of the carburator.

Anonymous

  • 89 Answers
  • Posted on Oct 07, 2009

SOURCE: Trying to order a replacement carb for 1984 F150

I have ran into this frequently.1984 ford,if it is a california vehicle,had a feedback carb.(electronic feedback control) with a computer. and they had 49 state vehicles. The 49 state vehicle is not electronic feedback. if the intake has been changed, it's going to be hard finding the right carb for it. a 2bbl won't fit a 4bbl manifold. Holly carb makes a replacement carb to fit many vehicles. check with your local auto parts person. they should be able to help you, or find one in the wrecking yard with everything to swap it out.

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Mar 12, 2010

SOURCE: spark plug wire diagram for 91 ford f150 302

here is a diagram, if u can't see it go to the link below.
http://autorepair.about.com/library/firing_orders/bl-fo-9225.htm


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Diagram distributor
Wide open as in wide open throttle?? You mean the engine is racing? Something is wrong with the throttle controls, or the throttle valve in the carburetor may be sticking open. Look down the carb throat. At its base will be the throttle valves-"butterfly" valves just like the choke valve on top of carb. The throttle valve should be closed at rest, or at idle, or when gas pedal is not moved. Rotate the throttle lever on the carburetor by hand (when gas pedal is pressed down, the throttle is rotated). The throttle valve at the bottom of the carb should open and close with the throttle lever.
If the valve is sticking, spray some carburetor cleaner down it, and spray the outside clean, too. Work the throttle back and forth to make sure it is free to move.
For a high idle, have the carburetor adjusted. Timing should be checked, too-that can cause a high idle, but wouldn't cause it to go wide open.
Let us know what you find. Good luck.
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Dec 07, 2013 • Ford Ranger Cars & Trucks
1helpful
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What could be the problem with the carb if going through way to much gas? 2 barrel carb &manual choke? F150 doesn't want to run very good when cold. Truck just guzzels the gas after started. Got a 302...
Possible things to be considered: Float level too high, needle has a bad seat and won't shut off, vacuum leak (either internal or base gasket), choke not properly adjusted.

My money would go on a carb. rebuild kit (but only if you feel comfortable attempting it) it's not all that difficult, but you MUST be (1) an absolute nut about cleaning it all very well, and (2) the various gaps, clearances, adjustments, must be made with excruciating precision.

This will be a lot cheaper than a rebuilt carb., and you'll get the satisfaction of doing it yourself.

While you're at it do a general tune up.....plugs, points condenser, wires , air filter, PCV, etc.
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Dec 30, 2010 • 1984 Ford F 150
4helpful
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I have a 69 Ford F100, 1 barrel carburater, the choke needs to be wide open for it to run. When I switch gears, I need to close choke and open it back up when I shift-this is the only way it will run. If I...
You need to rebuild the carburetor. As it is a 1 barrel its relatively easy to rebuild if you can find a kit, but it is the original carb and difficult to find parts. You may also consider buying a Holley 2 barrel carb - it will bolt right on and give you more power, and they are much more common and easier to find rebuild kits and parts. It's possible you may need an adapter plate, depending on the configuration of your intake manifold, but that will be easy to find. You can either shop online or buy from your local auto parts store or high performance shop. That old 1 barrel has had its day and I'm sure it served you well,but I think I would upgrade to a newer carb myself.You may be able to clean it out using carb cleaner spray but it would be hard to clear out that clogged jet that is causing your trouble, and then you will likely tear the gasket when you take the top off that carb.
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Nov 18, 2010 • 1981 Ford F 100
0helpful
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Have to stick screw driver down carb to open flappers to get started then the 1988 350 rins bad and if stalls it wont satrt again.
Your carburetor has an electrically controled choke thermostat. In addition to this you have what is known as a choke pull-off diaphram. this pull off over a peroiod of time wears through the rubber diaphram and it fails to open the choke the necessary amount to stop from choking the engine out completely. Now, during this failure your sparkplugs have become irreperably blackened with fuel soot and they cannot be cleaned. this is why once your engine warms up it will not run because fouled plugs will only fail when they are warm. You need to have your choke thermostat, your choke pull-off valve and your spark plugs checked and or changed.
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Mar 17, 2010 • 1988 Chevrolet C1500
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Need to know locations of springs on a Mastercraft D6ME 2 barrel Carburator. This carburator is on my 1977 Ford F250 4x4.
Looked through 1979 Motor Manual (similar to Chilton's at that time) and although it doesn't show that exact model all it shows is what I remember, which was a spring going from carb linkage to manifold, which was for tension on throttle return, and gas pedal. The other which would be for choke was simply the thermostatic coil and housing that attached at end of rod that choke was attached to on side of carburetor. When cold, it would retract the coil inside the housing, which in turn would rotate and close choke for cold starts, and as engine warmed up, it would expand and rotate opposite direction and pull choke off. Could this be what your looking for?
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Dec 20, 2009 • 1982 Ford F 250
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1987 F150 302. No trouble codes but engine idles too fast
The IAC (idle air control) may be stuck from dirt or malfunctioning.It's located in the intake near the throttle body.Remove it clean with carb cleaner and reinstall
Read full answer
Nov 23, 2009 • 1987 Ford F 150
0helpful
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Trying to order a replacement carb for 1984 F150 with a 302. They ask what make the carb is and number. Problem is the original carb was removed and replaced with a 4 barrel. Trying to buy 2 barrel but...
I have ran into this frequently.1984 ford,if it is a california vehicle,had a feedback carb.(electronic feedback control) with a computer. and they had 49 state vehicles. The 49 state vehicle is not electronic feedback. if the intake has been changed, it's going to be hard finding the right carb for it. a 2bbl won't fit a 4bbl manifold. Holly carb makes a replacement carb to fit many vehicles. check with your local auto parts person. they should be able to help you, or find one in the wrecking yard with everything to swap it out.
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Oct 07, 2009 • 1984 Ford F 150
1helpful
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It really stinks like gas an d runs freally rough where is the air fuel mixture ona motorcraft 2 barrel carb 1980 f150 300 6cyl
Sure choke isn't sticking? Mixture screws should be at base of carb.
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Jul 10, 2009 • 1981 Ford F 150
0helpful
1answer

My 80 ford f150 v8 302 wont start up i
if this is a 1980 F150, emissionwiz is correct in saying it has a carburetor, if your engine runs on ether, you do not have fuel supply to the engine. Check fuel delivery at the front of carburetor, should be a line screwed into the carb, may be connected by a rubber hose, remove this line and crank engine, look to see fuel is gushing out of the line, if no fuel the pump is bad, check fuel lines back to pump for leaks, replace leaking lines if necessary. If you get fuel then your float inside the carb is stuck, and the carb will need some attention, hope this helps, let me know
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May 30, 2009 • 1989 Ford F 150
1helpful
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FORD 150 2000
Fords are common for this. You can try to replace the choke, spark plugs, and air filter. Clean the carburetor (You can pour transmission fluid in the carburetor to clean it. This will loosen you valves and clean the carburetor. This will cause it to smoke, but it will not last long.) and put fuel cleaner in the gas. Change the fuel filter. In other words do a good tune up. Try NGK spark plugs. Carbureto might also need adjusting.
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Jul 06, 2008 • 2000 Ford F150 Flareside SuperCab
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