98 Ford Ranger Timing Belt?
So I everytime I align up the timing marks and get TDC. I seem to not find the compression stroke. I put a extension socket in the #1 cylinder and try to find the Compression Stroke. The say if you feel pressure push back then that's the compression. I also hear air pushing so I'm guessing thats the compression stroke. Once I get that then I find TDC and align the timing marks and put everything back together I start the truck and it studders, and sounds bad. So I'm assuming that I'm still off time but how? I've been on this truck for over alittle two weeks. I need it running soon.
TDC is when the #1 piston is at the top. The extension lifting all the way up is correct, (I use a plastic drinking straw so there's no chance of damaging the piston top) but remember that the piston does that twice so the crank shaft will turn two revolutions for each revolution of the camshaft. TDC markings will connect at the correct spot and again 180 degrees away from the correct spot.
The 4 stokes are starting all the way up, 1. Intake as the piston goes down, 2. Compression as it comes up again (this is where TDC is!) 3. Power as it goes back down again and 4. Exhaust as it comes back up again. (exhaust has the same "felt pressure" as compression) If you are measuring at the top of the exhaust stroke, you are 180 degrees away from TDC and things will not work right. The only way to know for sure is with the valve cover off, to watch the valves open and close. If a valve opens as the piston moves down, it is an intake valve. If it moves up, it is an exhaust valve. After you see the exhaust valve work, move the piston down and then back up again. That will be TDC.
Just because you have found Top Dead Center with the #1 cylinder doesn't necessarily mean that you have your timing set correctly. You still need to adjust the ignition so the spark plug fires at the appropriate time BEFORE top dead center. Get yourself a timing light and learn how to use it.
AND what about the firing order of the other cylinders? Do you have All the spark plugs wired correctly?
I'm unfamiliar with the timing belt replacement procedure for a Ford Ranger. Finding the compression stroke is usually not needed. Just having the timing marks aligned is important and making sure they're still aligned after rotating the crankshaft twice.
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