Question about 1981 Ford F 100

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I have 1981 straight 6 engine

I have a 1981 straight 6 engine that has been running rich 4.9 engine . how do i fixed it and so it will pass emission and not wast fuel

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  • davidadams14 Jan 13, 2009

    does a straight 6 f-100 1981 engine have an O2 sensor

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There are adjuster screws on each side of the carburattor one is fuel flow one is for air flow. turn them both ttil they are screwed all the way in and then on each one give it almost a full turn.you can use a flathead to do this and it takes about 10 minutes to do.

Posted on Jan 12, 2009

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Idles rough has power f150


If exhaust is rich, you may have excessive fuel getting dumped into cylinder(s). A sicking or leaking fuel injector can cause this. How many miles are on the engine? Improperly seating valves can cause this also. Or if timing is incorrect.

Apr 29, 2012 | Ford F-150 Cars & Trucks

2 Answers

Im not sure what wire goes to the distibutor cap to the spark plug on a 1981 6 cylinder Ford Ranger


Here is the firing order for the 4.9 liter in-line six cylinder engine.


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Jun 20, 2010 | 1981 Ford F 150

1 Answer

Cleaned out carburator on a F100 straight 6. Now


I would suspect there is dirt in the idle system, did you blow the jets and passages out with compressed air.

Jun 04, 2010 | 1981 Ford F 100

1 Answer

Ned to now wat the firing order for dist cop shood be for a 1987 ford f100 pick-up truck 300sixcylender stick shift model#333


The F100 ended in 1983, so there is some confusion on your 1987 Ford F100. The F150 started in 1983 and was available in 1987, but not the F100. You have this listed under the 1981 Ford F100 category.
The 300 CID = 4.9L In-Line (Straight) 6-Cylinder.
In order to best answer your question I have included both the 1981 F100 4.9L and 1987 F150 4.9L below. The only difference is with the Distributor Cap Configuration and Connections.

For the 1981 F100 300cid=4.9L:
Firing order:
1-5-3-6-2-4
Cylinders:
(back)
...6
...5
...4
...3
...2
...1
(front)
Distributor:
...(back)
.........4..[.]-clip
2
...................1
6
................5
[.]....3

For the 1987 F150 300cid=4.9L:
Firing Order:
1-5-3-6-2-4
Cylinders:
(back)
..6
..5
..4
..3
..2
..1
(front)
Distributor:
.......(back)
.................4
.....2
[.]
.......................1
..6
.........................[.]-clip
....................5
.......3
.........(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

May 07, 2010 | 1981 Ford F 100

1 Answer

I want to do an engine swap with a straight 6


With this you MUST have the ENGINE WIRING HARNESS for the Straight 6 as the Components such as TEMP Sensors, Distribitor, and other Electrical Items ARE DIFFERENT. Also ECM will have to Come With Striaght 6 as it is Calibrated for this Configeration ONLY.
I have Always ADVISED AGAINST this type of Engine SWAP Due to All I have Discribed here , UNLESS You Just Dont Mind Making ALL the Adjustments and MODIFICATIONS Needed for this Change Over.
Hope this Helps As your "DISCRIPTION" is Pretty Brief.

Sep 27, 2009 | 1981 Ford F 100

1 Answer

I have a 1981 ford with a 302 the cap has the firing order listed as 15786342 the dist has no elecs in it the pick ups on the crank it wont run right wired like this then when i switched it to 15426378 it...


This is from compcams website:

Firing Order, Small Block & SVO
This is one of the most common questions asked by our Ford customers. The firing order for the early 221-302 engines and the early 5.0 engines is 1-5-4-2-6-3-7-8. This is the firing order for all prefix “31” cams and is the standard replacement cam for all early engines. The later 5.0 engine and all 351 engines are designed to use the 1-3-7-2-6-5-4-8 firing order. This is the firing order for all prefix “35” cams, and cams ordered for these engines should use this prefix. Other than the firing order, the cams are identical. By changing the spark plug wiring at the distributor these cams can be interchanged.

I hope that this helps.

Tim

Jun 16, 2009 | 1981 Ford F 150

1 Answer

Did the 1981 corvette offer a 230 HP engine or just the 190 HP


Engine Specifications

Type ohv V-8
Displacement, liters/cubic inch
5.7/350 Bore X stroke, inches 4.00 X 3.48 Fuel management
1 X 4-bbl. Horsepower @ rpm
180 @ 4,200
Torque @ rpm, pound-foot
280 @ 1,600
Published Performance Numbers
Acceleration 190 hp, 4-speed manual
0-60 mph, second
8.1
0-100 mph, second
NA

Mar 25, 2009 | 1981 Chevrolet Corvette

1 Answer

302 engine wiring coil,distributer,ignition 1977 model


Try your local library for diagrams and pictures of both engines and that way you can figure out how the wiring goes

Mar 08, 2009 | 1981 Ford F 150

1 Answer

Does a f-100 have a straight 6 have an O2 sensor


No it does not have a o2 sensor.. one of my buddys has a f100

Jan 13, 2009 | 1981 Ford F 100

2 Answers

1981 Chevrolet Corvette runs "rich"


Have you done an engine vacuum leak test with carby cleaner especially around injector seals.A leak will throw a lean signal to oxy sensor there by telling the computer it needs more fuel.Cant think of anything other than what you have already done.

Oct 22, 2008 | 1981 Chevrolet Corvette

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