Question about 1990 Ford F150

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No fire my 1990 F- 150 six cyc 4 sp [.will not start.] engine only has fire when I let off at end of truning the engine over. PLEASE HELP

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Hi

This sounds like a good old case of "coil robbing", wherein whilst the starter motor is operating, there isn't enough juice left in the battery to afford a spark.

This is usually down to either a problem with the battery or a problem with the ignition system, and I believe your truck may be running the EDIS ignition system being a 1990 model.

Very best regards

Geordie

Posted on Jun 11, 2008

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Firing order for rocam1.6


A six cylinder in-line engine has a power impulse every 720 degrees/6 i.e. 120 degrees of crankshaft rotation. The crankshaft has six crank-throws placed at 120 degrees out of phase with one another, which can be arranged only in three planes. Therefore, the crankpin phasing is arranged in pairs. For heavy-duty diesel engines, seven journals and bearings are provided, at each end and between adjacent crankpins. For petrol engines only 4 or 5 main journals are provided. The firing order with the crankshaft arrangement shown in the attached figure is considered. With piston 1 at the top of the compression stroke, its opposite piston 6 is at the top of its exhaust stroke. Rotation of crankshaft through 120 degrees brings pistons 2 and 5 to their TDC and either one of these can be arrangement to complete a compression stroke. If piston 5 is arranged to be at the end of compression and at the start of its power stroke, then piston 2 must be on its exhaust stroke. Rotation of crankshaft through second 120 degrees positions pistons 3 and 4 at the TDC, so either one of these can be on the compression stroke. If piston 3 is made to be on compression, piston 4 must be on its exhaust stroke. A third rotation of 120 degrees brings pistons 1 and 6 back again to TDC, where piston 6 is arranged to be on the compression and piston 1, therefore, be on its exhaust stroke. A fourth 120 degrees rotation brings pistons 2 and 5 to their TDC. Piston 2 is now on its compression and piston 5 on its exhaust stroke. Rotation of crankshaft through fifth 120 degrees brings piston 3 and 4 to TDC. Piston 4 is on compression and piston 3 on its exhaust stroke. Final rotation of 120 degrees completes the 720 degrees displacement of crankshaft and brings the pistons into positions for the next cycle. This cycle provides a firing order of 1, 5, 3, 6, 2, 4. If the phasing of paired crank-throws 3 and 4 and 2 and 5 are interchanged, then a second equally suitable firing-order of 1, 4, 2, 6, 3, 5 is achieved. This arrangement provides excellent dynamic balance and evenness of torque, and is preferred for engines larger than 2.5 liters provided length is not a prime consideration.

Sep 28, 2016 | Cars & Trucks

1 Answer

Change spark plug wires 1998 acura tl 2-5 it wont start


you didnt change them 1 by 1, did you. oops...
see the FSM for this, by engine type
or alldata.com
this engine?
2.5L (G25A4) Engine Firing order: 1-2-4-5-3 Distributorless ignition system

front of car.
engine
coil pak( 4,5,C.3,2,1)
rear fire wall

Jan 28, 2014 | 1998 Acura TL

1 Answer

While driving jeep loses elect. to engine. still has fuel pressure. after a few minutes it will strat back up.


Check all fuse box connections, battery terminals and leads. Also check age of battery. If it has too much silt in the bottom of it (corrosion) then it may be shorting within.

Nov 13, 2012 | 2000 Jeep Cherokee

1 Answer

Sparkplug wiring for a straight six


Hi JT, The typical firing order for a straight six is 1-5-3-6-2-4. If this doesn't help let us know the specific engine your working on and we'll help you. Regards John

Feb 09, 2012 | 1990 Jeep Wrangler

1 Answer

I have a problem on a 96 150 with 4.6 L six cyc, auto. Engine turns over fine, fuel pump running, can smell gas from exhaust, no fire! Checked all fuses, even under hood, all OK, got to be a MODULE or...


There are several things that few people know about starting cars in cold weather. 1. Check your battery to make sure it is not rusted, leaking, and has a charge 2. Jump start your battery with another car, even if you believe the battery is good, this often times will still start your car. 3. If your engine is cold, and you have an older car, ensure to get your fuel lines to the engine flushed or have fuel injection service performed 4. The engine tends to warp the same way wood does during the extreme cold, do not be afraid to continue trying to warm up the engine by constant cranks with it is cold out. Your not going to hurt the car, the worse that could happen is too much fuel will enter the carborator and cause flooding in the system to occur. Wait 20 minutes if this happens and start to crank again 5. Bad spark plugs are a major reason why many cars take a very long time to start 6. Please have your spark plugs removed and exchanged for new ones. Over time, spark plugs become fowled and prevent the car from starting even thou you hear cranking!!!

Jan 22, 2011 | 2004 Ford F150

2 Answers

2006 f150 firing order


For the 4.2L:
Firing Order:
1-4-2-5-3-6
Cylinders:
3----------6
2----------5
1----------4
(Front of Vehicle)


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

Feb 20, 2010 | 2006 Ford F-150

1 Answer

Need ignition firing for 95 4 l. engine


1-5-3-6-2-4


ALL Jeep 4.0 motors use this firing order. Any year, any model, high output or not.


Also, the spark plug wire placement on the cap, in a clockwise direction from the post nearest the engine block is: 6-2-4-1-5-3. (to the left side of the number 6 post, there should be a hold down screw or strap for fastening the distributor cap to the distributor.

For a picture diagram, please go to this website:
http://www.jeepz.com/forum/engine/16923-six-cylinder-4-0-liter-jeep-engine-specs.html

Dec 27, 2009 | 1995 Jeep Cherokee

2 Answers

What is the firing order for a 2006 ford tauras


Sir,
There are two firing order sequences for the FORD V-6. It depends on which engine you have. The first is 1-4-2-5-3-6. The second is 
1-4-2-3-5-6. The in-line six cylinder engines use: 1-5-3-6-2-4. You should look at the intake manifold to see which firing order your car uses. The firing order is normally stamped or embossed on the top of the intake manifold.


Link 1
Thanks Good Luck
Appreciate to rate as "Fixya"

Mar 07, 2009 | 2006 Ford Taurus

1 Answer

Ford f150 1986


The firing order for the 4.9 L engine is 1-5-3-6-2-4, with the firing order rotation on the distributor cap going clockwise. For the 5.0 & 7.5 L engines, the order is 1-5-4-2-6-3-7-8, and the 5.8 L engine is 1-3-7-2-6-5-4-8. On all three of these engines, the distributor cap firing rotation is counterclockwise. Also, on the six cylinder 4.9 L engine, the cylinders are in a "straight six", with #1 cylinder starting in front, and going in order straight back to #6. The eight cylinder engines' cylinders all fire in order also, (standing in front of the vehicle looking back towards the firewall) with #1 being front on your left and going straight back to #4, and then #5 being at front right, going straight back to #8, with the distributor being front and center. Hope this helps you out.

Aug 13, 2008 | 1986 Ford F150 SuperCab

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