Help timing issues

[96 GSX LOVE]

Okay so i have a 96 gsx and I just had the motor torn apart. When i put the head back on i followed the correct procedure i aligned my cams with dowel pins straight up pulled them together. Then put the belt on zip tied the belt to the cam gear. Ran it down around my oil pump left the crank pulley a little counterclockwise of the timing mark then put the belt around that and spun the crank just a tad to make tight then around my tensioner. Everything lined up great. Problem i had air blowing out of my intake and air sucking in my intake

 

[SrKegler]

Sounds like a bent valve.

 

[97gsxIA]

Problem i had air blowing out of my intake and air sucking in my intake

Elaborate. "Air sucking and air blowing through intake" isn't exactly easy to follow.
Was this during a boost leak test? Leak down test?

 

[SrKegler]

I though that, but he says his dowel pins are at 12:00. Only valves that would be open is #4 exhaust. Shouldn't be anything going through the intake. If he's doing a boost leak test, could be going through the PCV valve. Don't know how he got he sucking air into the intake.

 

[96 GSX LOVE]

My bad guys there is air sucking in the exhaust and air blowing out the intake during cranking the motor.

 

[SrKegler]

The only way air can get into an engine is thru the valves. If an exhaust valve is open, air can be sucked past it when the cylinder is on the down stroke. If an intake valve is open, air can blow past the valve on the compression stroke. Either have bent valves or possibly the lifters weren't bled down and is holding the valves off the seat.

Why was the engine torn apart is the first place. Maybe if we knew the original problem we could better diagnose the problem. My money is on bent valves though.

 

[96 GSX LOVE]

Well i turned it over by hand and it was fine also i did not bleed the lifters because i did not know that you had to do that. The reason the motor was torn apart was to replace the hg and arp studs

 

[mercaholik]

It's probably a good idea to either do a clt or pull the head and check those valves. Or your cam timing is off, you didn't accidentally swap cams did you? I just read a post where that happened.

 

[mitsubishikid]

It's probably a good idea to either do a clt or pull the head and check those valves. Or your cam timing is off, you didn't accidentally swap cams did you? I just read a post where that happened.

^^^I second this.

Also double check that the hydraulic lash adjusters are seated correctly on the lifters.

 

[northernawd]

Try a leak down test and itwill give you the answer

 

[96 GSX LOVE]

If i accidentally swapped the cams around would it bend my valves?

 

[babyviper]

Step 1: post a pic of your timing marks on the engine.
Step 2: describe in detail, how you are doing this test. Boost leak test, leak down test? If you cant describe, take a pic.

To answer your question about, "can I swap my cam gears" this really isn't possible if you have a cam angle sensor on the intake cam.

 

[96 GSX LOVE]

Its a 96 so i do not have the cam angle sensor on the side i have it underneath the cam gear. I cant post pics of my timing marks but its 100 % perfect. I didnt bleed my lifters would that make me bend valves?

 

[babyviper]

Not bleeding your lifters can bend valves. If the lifters are pumped full of oil the valves can be open when they are supposed to be closed. Even though you have a 96 with the CAS on the cam gear there is still a slot on the intake gear for the CAS.

 

[DSM1G90]

Did you feel a strong bit of resistance when you turned the motor over by hand?
That is when the piston came up and kissed the valve that was down too far and bent it.

 

[96 GSX LOVE]

No like i felt alittle but i also have 280 cams and bc springs and retainers

 

[babyviper]

nice to know that info, did you just do this upgrade or did you have these cams before?

 

[96 GSX LOVE]

No I just put the cams and valve springs in

 

[mercaholik]

It's true stock cams have a slot in the end for cas but someone had posted that they where having a timing issue and the came back and said the cams where accidentally put back in the wrong spot. Not sure how either buy that's what they said, I was really kidding. AutoZone rents clt kits for free just have to put a refundable deposit down.

 

[96 GSX LOVE]

Okay guys so i figured it out i didnt bleed my lifters. I put my head on then tightened down my cams which pushed the valves open into my 1 and 4 pistons and vent those valves then cranked my motor over and bent my others. Got it all replaced and its good now. Thank you guys for all your help.