1999 Ranger 4.0 OHV crank no start
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#53
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If there is no start with "ether" then you don't have spark at the right time or you don't have compression, simple as that
Engines are very simple to diagnose, gasoline engines needs 3 things
1. fuel, with air
2. Spark, at the right time
3. compression, above 100psi
If you spray fuel into the engine and it doesn't start up, then you are down to spark and compression
You say there is spark
So its a compression issue
Engines are very simple to diagnose, gasoline engines needs 3 things
1. fuel, with air
2. Spark, at the right time
3. compression, above 100psi
If you spray fuel into the engine and it doesn't start up, then you are down to spark and compression
You say there is spark
So its a compression issue
#54
Join Date: Apr 2020
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seanagins (07-16-2020)
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Well none have spark if engine didn't start with "ether", if even one spark plug was working engine would at least Fire, sound like it wants to start
Its very hard to test spark on a Coil Pack engines, spark plugs are in series
If you have a compression gauge I would test a few cylinders, 150psi is expected, just to take that off the table, or find out it is the problem and you can go from there
Its very hard to test spark on a Coil Pack engines, spark plugs are in series
If you have a compression gauge I would test a few cylinders, 150psi is expected, just to take that off the table, or find out it is the problem and you can go from there
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You should be able to spin them with fingers but only when that valve is fully closed, yes it can be hard to spin but should spin
You have to rotate the engine/crank to check all 12
You can check the valve timing by checking the timing mark on crank pulley and adding a mark(tape) 180 deg opposite the timing mark
#1 and #5 are matched sets, the pistons go up and down at the same time, to balance the engine
The timing mark is associated with #1 and #5 piston being up all the way, TDC(top dead center)
The intake and exhaust valve are closed for 360deg of crank rotation on that cylinders compression and power stroke
But that 180deg starts with #1 or #5 piston down all the way, which is why you add a mark 180deg opposite TDC mark
4 stroke engine
Intake stroke, intake valve starts to open just after TDC mark, as piston goes down it sucks in air/fuel mix, intake valves starts to close as you approach 180deg mark BDC(bottom dead center)
Compression stroke, both intake and exhaust valve are fully closed piston is going up compressing the air/fuel mix
Power stroke, both valves still closed, spark plug has ignited the air/fuel mix, and piston is being pushed down by the explostion
Exhaust stroke, intake and exhaust valves have been closed for 360deg now, BDC to BDC, exhaust valve now starts to open as piston goes up, pushing out the burnt air/fuel mix
Back to intake stroke, TDC mark, exhaust valve just closed and intake valve is opening again
You have to rotate the engine/crank to check all 12
You can check the valve timing by checking the timing mark on crank pulley and adding a mark(tape) 180 deg opposite the timing mark
#1 and #5 are matched sets, the pistons go up and down at the same time, to balance the engine
The timing mark is associated with #1 and #5 piston being up all the way, TDC(top dead center)
The intake and exhaust valve are closed for 360deg of crank rotation on that cylinders compression and power stroke
But that 180deg starts with #1 or #5 piston down all the way, which is why you add a mark 180deg opposite TDC mark
4 stroke engine
Intake stroke, intake valve starts to open just after TDC mark, as piston goes down it sucks in air/fuel mix, intake valves starts to close as you approach 180deg mark BDC(bottom dead center)
Compression stroke, both intake and exhaust valve are fully closed piston is going up compressing the air/fuel mix
Power stroke, both valves still closed, spark plug has ignited the air/fuel mix, and piston is being pushed down by the explostion
Exhaust stroke, intake and exhaust valves have been closed for 360deg now, BDC to BDC, exhaust valve now starts to open as piston goes up, pushing out the burnt air/fuel mix
Back to intake stroke, TDC mark, exhaust valve just closed and intake valve is opening again
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seanagins (07-16-2020)
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The cable adjustment is on the transmission.
There is a bit of an art to it, so trial and error is where DIY ends up, lol
Fords way, MAKE SURE TIRES ARE BLOCKED!!!!!!
Now most people don't have a 3lb weight hanging around, lol
But, remember the elementary school rhyme.........."A pints a Pound the world around", so 3 pints of water = 3lb
Use a container with 3 pints of water and hang it on the shifter
The Display in the dash for P R N D 1 2 is adjusted in side the steering column and should only be adjusted AFTER the cable is done and correct
There is a bit of an art to it, so trial and error is where DIY ends up, lol
Fords way, MAKE SURE TIRES ARE BLOCKED!!!!!!
Cable/Bracket Adjustment
1. Place the gearshift lever (7210) in the (D) position and hang a 1.4 kg (3 lb) weight on the shift control selector lever.
Move the gearshift lever to the first gear position, then move back two detents to the (D) position.
Hang the 1.4 kg (3 lb) weight on the gearshift lever.
2. Raise and support the vehicle; refer to «Section 100-02».
3. Disconnect the transmission shift cable from the manual control lever (7A256).
4. Pull out the transmission shift cable adjustment lock on the shift cable body.
5. Place the manual control lever in the (D) position.
5.1 Rotate the manual control lever fully counterclockwise.
5.2 Rotate the manual control lever clockwise to the (D) position. (2 detents).
6. Connect the transmission shift cable to the manual control lever.
7. Push in the transmission shift cable adjustment lock on the shift cable body.
8. Note:
If equipped with air suspension, reactivate the system by turning on the air suspension switch.
Lower the vehicle.
9. Remove the 1.4 kg (3 lb) weight.
10. CAUTION:
To prevent damage, do not adjust the transmission shift cable in any position other than (D).
Verify that the vehicle will start only in P or N and that backup lamps illuminate in R. If not, repeat steps 1 through 7 and perform a digital transmission range sensor alignment; refer to «Section 307-01A» or «Section 307-01B».
1. Place the gearshift lever (7210) in the (D) position and hang a 1.4 kg (3 lb) weight on the shift control selector lever.
Move the gearshift lever to the first gear position, then move back two detents to the (D) position.
Hang the 1.4 kg (3 lb) weight on the gearshift lever.
2. Raise and support the vehicle; refer to «Section 100-02».
3. Disconnect the transmission shift cable from the manual control lever (7A256).
4. Pull out the transmission shift cable adjustment lock on the shift cable body.
5. Place the manual control lever in the (D) position.
5.1 Rotate the manual control lever fully counterclockwise.
5.2 Rotate the manual control lever clockwise to the (D) position. (2 detents).
6. Connect the transmission shift cable to the manual control lever.
7. Push in the transmission shift cable adjustment lock on the shift cable body.
8. Note:
If equipped with air suspension, reactivate the system by turning on the air suspension switch.
Lower the vehicle.
9. Remove the 1.4 kg (3 lb) weight.
10. CAUTION:
To prevent damage, do not adjust the transmission shift cable in any position other than (D).
Verify that the vehicle will start only in P or N and that backup lamps illuminate in R. If not, repeat steps 1 through 7 and perform a digital transmission range sensor alignment; refer to «Section 307-01A» or «Section 307-01B».
But, remember the elementary school rhyme.........."A pints a Pound the world around", so 3 pints of water = 3lb
Use a container with 3 pints of water and hang it on the shifter
The Display in the dash for P R N D 1 2 is adjusted in side the steering column and should only be adjusted AFTER the cable is done and correct
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seanagins (07-27-2020)