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Push-rods

Tiny
BROKENEGGS
  • MEMBER
  • 2003 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 200,000 MILES
All push rods have been removed. I need to put them back in but do not know where they go. There are two sizes one is shorter than the other. I was told one is for exhaust an other for intake, but I do not know which one goes where. (Help)
Saturday, September 30th, 2017 AT 6:13 AM

33 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,465 POSTS
Short ones are for intake and long are for exhaust. But, if you do not know which ones came from where and the rockers have been moved around, do not be surprised if you see a lot of wear between the parts.
Coat them with a good glob of break in lube and hope they do not fail.
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Saturday, September 30th, 2017 AT 12:09 PM
Tiny
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Do all the long one's go in the back slots and all the short one's go in the front slots?
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Monday, October 2nd, 2017 AT 6:31 AM
Tiny
KEN L
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Yes, please send a picture of what you are talking about so we can see whats going on if you can

Best, Ken
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Monday, October 2nd, 2017 AT 1:49 PM
Tiny
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I managed to get this part done, But now I have another problem, It is running rough and blowing white smoke, it will not go past 4 rpm's with out smoothing down, What is going on?
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Monday, October 2nd, 2017 AT 1:56 PM
Tiny
STEVE W.
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Sounds like a blown head gasket or water leaking into the engine. That is what causes white smoke. What was it originally taken apart for?
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Monday, October 2nd, 2017 AT 3:18 PM
Tiny
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A broken intake valve push rod. But after running for awhile it has quit smoking but it is still idling rough but when I give it a little gas it runs fine as long as I do not take it up to 4 rpm's If I take it up to 4 rpm's it smothers down. I noticed it was low on water so I added a gallon jug but I noticed it is starting to run hot after running just for a minute are two it never did this before. Why is it Smothering down and running hot?
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Tuesday, October 3rd, 2017 AT 8:19 AM
Tiny
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Like I say there is no white smoke anymore, But even if you can't see it their is a o strong a odor of Carbon Monoxide coming from it that you can't stand to stay around it and every once in awhile a tinging sound.
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Wednesday, October 4th, 2017 AT 11:16 AM
Tiny
KEN L
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Smothering down is normal in neutral the computer will not allow the engine to rev above 4 to help the engine to not be damaged.

The rough idle I feel is the concern. Lets go back to basics and make sure the compression is good all around.

https://www.2carpros.com/articles/how-to-test-engine-compression

Please let us know what you find
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Wednesday, October 4th, 2017 AT 12:39 PM
Tiny
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Thanks for this. Could the spark plugs cause this same problem, I have no idea when they were last changed. It has always cranked and ran well, so I gave them no thought.
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Thursday, October 5th, 2017 AT 8:10 AM
Tiny
STEVE W.
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Plugs could cause rough running. High fume level sounds like the convertor is getting hit with a lot of fuel.
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Thursday, October 5th, 2017 AT 6:58 PM
Tiny
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What is causing to much gas to get to converter and what do I need to do to fix this?
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Friday, October 6th, 2017 AT 7:48 AM
Tiny
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I have noticed that in the related section that their are a lot of people having problems with their push rods. Is this a Pontiac issue?
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Friday, October 6th, 2017 AT 7:53 AM
Tiny
STEVE W.
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The engine rough running is why you are getting the smell. It's from misfiring in the cylinders dumping extra fuel into the converter. Once that is repaired it should be better.
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Friday, October 6th, 2017 AT 8:11 AM
Tiny
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Thanks for all your help. I had a test ran today and it shows a bad MAP (Manifold Absolute Pressure ) Sensor. I purchased a new one, When I have the old one replaced with this new one I will let you know if this does the trick.
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Tuesday, October 10th, 2017 AT 4:59 PM
Tiny
KEN L
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Please let us know what happens.

Cheers, Ken
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Wednesday, October 11th, 2017 AT 10:15 AM
Tiny
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Nothing Happened, there is no difference in the new one from the old one. There was a mechanic in the parts house and he took time enough to do a little checking for me, and he says he believes I have a vacuum leak some where.
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Wednesday, October 11th, 2017 AT 2:02 PM
Tiny
STEVE W.
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Vacuum is what controls the MAP so if there is a leak it can cause the MAP readings to be wrong. Easy way to look for a vacuum leak is to GENTLY spray some starting fluid along the hoses and intake and listen for the engine to speed up. Just don't spray a lot at a time, you don't want to have it running along places. It could "find" a leak if it runs to a spot you haven't sprayed yet, then you think the leak is where you just sprayed.
Another way is to spray water around and listen for it to be sucked in, this way works fine as long as you don't drown the engine. An easy test bottle for this is a soda/water bottle with a small hole in the top. Use it like a squirt gun to spray things.
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Wednesday, October 11th, 2017 AT 2:12 PM
Tiny
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The hose that plugs into back of the motor and the other end plugs into top of large hose that goes to air filter has a bad fitting that goes into back of motor and keeps coming out of hole, so I took it off just to see what would happen and there was no change in the rough way it was running.
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Wednesday, October 11th, 2017 AT 7:39 PM
Tiny
STEVE W.
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There wouldn't be a change if it leaks and you remove it. That just makes the leak worse.
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Thursday, October 12th, 2017 AT 1:41 AM
Tiny
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How can I send you a pic of this hose?
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Thursday, October 12th, 2017 AT 8:48 AM

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