timing belt slipped off!
#1
timing belt slipped off!
Hi everyone, I'm new to this forum and unfortunately I have run into an issue on my Ford Ranger! It's a 1991 2.3l 4x2, and I recently did a head gasket and valve cover gasket replacement. It was all going well until the engine was all back together and I went to start up the truck. It turned over for about 5 seconds, and then the timing belt slipped off the camshaft! I was wondering, would I need to get the engine re-timed, or could I just slip the belt back on and tighten up the tensioner? I'd really like to just slip the belt back on, but I wouldn't want to do that if the timing was off. How should I proceed?
Thanks!
Tim
Thanks!
Tim
#2
#3
The 2.3 is not a interferance engine that I know of.
But like mhoward mentioned you will need to line up the timing marks.
I would also want to know why the belt came off in the first place.
My guess is the slack was not removed on the non tensioner side of the timing belt before the tensioner was set.
Whenever doing a timing belt or chain you need to rotate the engine over by hand in the normal rotaton of the engine once or twice to insure the timing marks line up correctley after rotating the engine.
By rotating the engine and rechecking the marks you will know for sure the belt tension is proper and the engine is infact timed.
Good luck with the repair.
But like mhoward mentioned you will need to line up the timing marks.
I would also want to know why the belt came off in the first place.
My guess is the slack was not removed on the non tensioner side of the timing belt before the tensioner was set.
Whenever doing a timing belt or chain you need to rotate the engine over by hand in the normal rotaton of the engine once or twice to insure the timing marks line up correctley after rotating the engine.
By rotating the engine and rechecking the marks you will know for sure the belt tension is proper and the engine is infact timed.
Good luck with the repair.
#4
RF Veteran
iTrader: (1)
Yes, +1, 2.3l Lima engine is not an interference engine, so valves and pistons can not touch at any time.
On the crank gear there is a large "washer" that goes on after the gear, it is the belt guide, it keeps belt from "walking off" of the gear as it rotates
People often forget to put this back on
On the crank gear there is a large "washer" that goes on after the gear, it is the belt guide, it keeps belt from "walking off" of the gear as it rotates
People often forget to put this back on
#5
Yes, +1, 2.3l Lima engine is not an interference engine, so valves and pistons can not touch at any time.
On the crank gear there is a large "washer" that goes on after the gear, it is the belt guide, it keeps belt from "walking off" of the gear as it rotates
People often forget to put this back on
On the crank gear there is a large "washer" that goes on after the gear, it is the belt guide, it keeps belt from "walking off" of the gear as it rotates
People often forget to put this back on
Thanks!
#7
#8
RF Veteran
iTrader: (1)
CKP(crank shaft position) sensor
It is on the crank, of course, it is where you were working when replacing timing belt
CKP sensors is the "big kahuna" of sensors, pretty much the only sensor that can cause a no start if it isn't working.
The ICM(spark module) is connected directly to CKP sensor, if ICM doesn't get a good signal from CKP then no spark, and no fuel either because ICM sends CKP signal to computer for fuel injector timing.
First step is to see if No Spark is the issue
Spray gasoline or Quick Start(ether) into the intake and try to start engine
If it starts then you have spark, but no fuel from injectors
If it doesn't start you have No Spark(or no compression)
50/50 test
It is on the crank, of course, it is where you were working when replacing timing belt
CKP sensors is the "big kahuna" of sensors, pretty much the only sensor that can cause a no start if it isn't working.
The ICM(spark module) is connected directly to CKP sensor, if ICM doesn't get a good signal from CKP then no spark, and no fuel either because ICM sends CKP signal to computer for fuel injector timing.
First step is to see if No Spark is the issue
Spray gasoline or Quick Start(ether) into the intake and try to start engine
If it starts then you have spark, but no fuel from injectors
If it doesn't start you have No Spark(or no compression)
50/50 test
#9
CKP(crank shaft position) sensor
It is on the crank, of course, it is where you were working when replacing timing belt
CKP sensors is the "big kahuna" of sensors, pretty much the only sensor that can cause a no start if it isn't working.
The ICM(spark module) is connected directly to CKP sensor, if ICM doesn't get a good signal from CKP then no spark, and no fuel either because ICM sends CKP signal to computer for fuel injector timing.
First step is to see if No Spark is the issue
Spray gasoline or Quick Start(ether) into the intake and try to start engine
If it starts then you have spark, but no fuel from injectors
If it doesn't start you have No Spark(or no compression)
50/50 test
It is on the crank, of course, it is where you were working when replacing timing belt
CKP sensors is the "big kahuna" of sensors, pretty much the only sensor that can cause a no start if it isn't working.
The ICM(spark module) is connected directly to CKP sensor, if ICM doesn't get a good signal from CKP then no spark, and no fuel either because ICM sends CKP signal to computer for fuel injector timing.
First step is to see if No Spark is the issue
Spray gasoline or Quick Start(ether) into the intake and try to start engine
If it starts then you have spark, but no fuel from injectors
If it doesn't start you have No Spark(or no compression)
50/50 test
#10
RF Veteran
iTrader: (1)
There are 2 timing marks on the front engine cover, one for CAM and one for AUX(oil pump)
Triangle is for CAM gear, at about 4 or 5 o'clock position on front cover
Diamond is for AUX gear, its mark is at 12:00 position
Since CAM and AUX gears are the same size they are often interchangeable so have BOTH Triangle and Diamond marks on the gears, you have to MATCH the Marks
Triangle/Triangle CAM
Diamond/Diamond AUX
Crank gear has a mark but most just use key way since it is easy to see
Key slot is at 12:00, but that is if engine itself is at 12:00 which it isn't, engine is tilted slightly, so crank key slot should be at 12:00 to the ENGINE not the universe in general, lol.
Drawing here for the 2.3l Lima engine and timing belt marks: https://motogurumag.com/i/ford-23l-l...er-khFEoXi.png
It shows CAM and AUX gears having BOTH Marks
Triangle is for CAM gear, at about 4 or 5 o'clock position on front cover
Diamond is for AUX gear, its mark is at 12:00 position
Since CAM and AUX gears are the same size they are often interchangeable so have BOTH Triangle and Diamond marks on the gears, you have to MATCH the Marks
Triangle/Triangle CAM
Diamond/Diamond AUX
Crank gear has a mark but most just use key way since it is easy to see
Key slot is at 12:00, but that is if engine itself is at 12:00 which it isn't, engine is tilted slightly, so crank key slot should be at 12:00 to the ENGINE not the universe in general, lol.
Drawing here for the 2.3l Lima engine and timing belt marks: https://motogurumag.com/i/ford-23l-l...er-khFEoXi.png
It shows CAM and AUX gears having BOTH Marks
Last edited by RonD; 12-01-2017 at 10:29 AM.
#11
There are 2 timing marks on the front engine cover, one for CAM and one for AUX(oil pump)
Triangle is for CAM gear, at about 4 or 5 o'clock position on front cover
Diamond is for AUX gear, its mark is at 12:00 position
Since CAM and AUX gears are the same size they are often interchangeable so have BOTH Triangle and Diamond marks on the gears, you have to MATCH the Marks
Triangle/Triangle CAM
Diamond/Diamond AUX
Crank gear has a mark but most just use key way since it is easy to see
Key slot is at 12:00, but that is if engine itself is at 12:00 which it isn't, engine is tilted slightly, so crank key slot should be at 12:00 to the ENGINE not the universe in general, lol.
Drawing here for the 2.3l Lima engine and timing belt marks: https://motogurumag.com/i/ford-23l-l...er-khFEoXi.png
It shows CAM and AUX gears having BOTH Marks
Triangle is for CAM gear, at about 4 or 5 o'clock position on front cover
Diamond is for AUX gear, its mark is at 12:00 position
Since CAM and AUX gears are the same size they are often interchangeable so have BOTH Triangle and Diamond marks on the gears, you have to MATCH the Marks
Triangle/Triangle CAM
Diamond/Diamond AUX
Crank gear has a mark but most just use key way since it is easy to see
Key slot is at 12:00, but that is if engine itself is at 12:00 which it isn't, engine is tilted slightly, so crank key slot should be at 12:00 to the ENGINE not the universe in general, lol.
Drawing here for the 2.3l Lima engine and timing belt marks: https://motogurumag.com/i/ford-23l-l...er-khFEoXi.png
It shows CAM and AUX gears having BOTH Marks
is this another way to tell? Or is there another marking I am missing...
#12
RF Veteran
iTrader: (1)
No, that is not a mark.
Marks will be on the metal ring behind the gear
This picture shows the Cam and Aux keyways pointing at 6:00 when timing is correct: http://i.fixya.net/uploads/images/5f171ff.gif
Not sure if that is true, never did it using key ways for cam and aux
Search the metal ring, timing marks should be there
Marks will be on the metal ring behind the gear
This picture shows the Cam and Aux keyways pointing at 6:00 when timing is correct: http://i.fixya.net/uploads/images/5f171ff.gif
Not sure if that is true, never did it using key ways for cam and aux
Search the metal ring, timing marks should be there
#13
No, that is not a mark.
Marks will be on the metal ring behind the gear
This picture shows the Cam and Aux keyways pointing at 6:00 when timing is correct: http://i.fixya.net/uploads/images/5f171ff.gif
Not sure if that is true, never did it using key ways for cam and aux
Search the metal ring, timing marks should be there
Marks will be on the metal ring behind the gear
This picture shows the Cam and Aux keyways pointing at 6:00 when timing is correct: http://i.fixya.net/uploads/images/5f171ff.gif
Not sure if that is true, never did it using key ways for cam and aux
Search the metal ring, timing marks should be there
worst case, what do you think a shop would charge to get this timed properly?
#14
RF Veteran
iTrader: (1)
Yes, take the bolt off and you will see the keyway
Once belt is on turn engine using crank bolt
#4 intake valve should start to open, #4 just finished exhaust stroke
Continue turning crank and when crank timing mark has just passed 6:00 #1 exhaust valve should start to open
When crank mark is back to TDC #1 exhaust valve should be closed and if you turn a little more #1 intake valve should start to open
Once belt is on turn engine using crank bolt
#4 intake valve should start to open, #4 just finished exhaust stroke
Continue turning crank and when crank timing mark has just passed 6:00 #1 exhaust valve should start to open
When crank mark is back to TDC #1 exhaust valve should be closed and if you turn a little more #1 intake valve should start to open
Last edited by RonD; 12-02-2017 at 10:48 AM.
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