Dowel pins up or down on cam gear when matching marks?

[jakeb2011]

Sorry it seems like such a simple question but this is my first timing go around and I put it all back together and it doesn't run at all. I turned the belt 6 times to make sure nothing was hitting or binding and it checked out. Is it possible on a 97 head (was replaced somewhat recently) that the dowel pins are down when the timing marks are aligned? Everything else was lined up and still is. Or do the cams upside down bend the valves under start up?

 

[007jimmy]

They should be up. This is my 97 block.

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Do not start it with them down.

 

[idkiliketurbos]

The dowel pins should be facing up. If you didn't notice anything hitting you probably didn't mess anything up but just take a look at it again and redo the timing if you need to. Make sure that all of your marks are lined up and go from there.

 

[4SFED4]

The dowel pins on the cam gears should be up when cylinder#1 is at top dead center. I would assume if you had it backwards that the valves got bent.

 

[jakeb2011]

Ok well I definitely have the pins up so then I guess that's not my problem. I reset the timing to put in my new lifters in but it seems like those wouldn't keep it from running. It sounds like somethings off but everything is aligned and it ran before so I have no clue.

 

[pauleyman]

I would assume if you had it backwards that the valves got bent.

So what happens if you setup a timing belt correctly then rotate the crank one full turn? The dowels are down. Is it still in time? Yes. So what can happen if you don't start dowels up? well if you have balance shafts they could be out of time. It still isn't right but I think we can all understand the relative position of crank and cams and why valves would not hit. OP, do you have spark and/or fuel?

 

[DSM1G90]

Why we roll the crank six times around so that all marks are aligned back up from the beginning due to the crank sprocket turns twice the speed as the cam sprockets.

 

[pauleyman]

Why we roll the crank six times around so that all marks are aligned back up from the beginning due to the crank sprocket turns twice the speed as the cam sprockets

Yes of course. My point is dowels down is still in time. It just wont' allow you to set balance shafts if you have them. Question still remains to the OP. Do you have spark and/or fuel?

 

[jakeb2011]

I think its the fuel pump cause if I cycle the key a couple times then try it it starts, stumbles then stalls. If i don't cycle the key I dont get much of anything.

 

[007jimmy]

What do you mean by cycle the key? The fuel pump doesnt activate untill cranking the car.

 

[jakeb2011]

maybe its just in my head then. I cycle it to the On position then OFF.

 

[John Mark Dongon]

Does the does tensioner pulley have to be aligned a certain way?

 

[pauleyman]

Sort of. Which way you turn depends on which motor you have. How far is relative to tension. So position isnt how you set it. You set it by tension. By the book yiure supposed to use an inch pound wrench. Most of us do it by feel. The important part is the hydraulic tensioner. Wherever the pulley ends up the hydraulic has to be right. The position will vary due to head milling. Gasket etc.