Help me diagnose this noise
Originally Posted by Rob M
Oh 
, sorry bout that....i just kinda saw it got a little suspicious. Well thats what i get for 
lol
, sorry bout that....i just kinda saw it got a little suspicious. Well thats what i get for lol
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From: Dallas (Richardson), TX, USA
Yeah, stupid women. I had my wife holding the fuel line out of the way so I could hold the camera with two hands. Her hair gets freaking everywhere!!! It's so frustrating.
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From: Dallas (Richardson), TX, USA
Sooo... I'm putting the engine back together. Anyone think that I should replace the rockers? They look fine to me. You can just barely tell which ones were on the bad valves. They don't look damaged at all. They just look... different somehow. It's like they've been rubbed a bit harder or something.
In any case, I can't imagine how the rockers would have done this. Anyone have any thoughts?
In any case, I can't imagine how the rockers would have done this. Anyone have any thoughts?
If you've got extra time with the car post some pics of how that one rocker looks alittle diff. ya know. Maybe get some further in put before you put the VCs and coil packs all on...just a thought though..
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From: Dallas (Richardson), TX, USA
Utter catastrophy has befallen me this evening... even though it may be my fault.
I put the car together and fired it up. The sound was exactly the same. It was just a constant tapping sound. This time, however, we couldn't tell where it was coming from. It didn't sound like it was coming from the driver's side head.
So, we took a few videos, one of which you can see here, and we discussed the matter. We decided to take the car out for a spin to see how it behaved. Perhaps experiencing a moment of poor judgement I ran the car hard on the service road of a highway... real hard. After letting off at the top of third gear I noticed two things. One, the sound was much, much louder. Two, the tachometer was reading zero RPMs despite the fact that the engine seemed to be running fine. We tried starting it one time after we stopped in a parking lot, and we noticed that the starter was having a hell of a time turning the engine over, but it did manage to fire up.
So, at this point, my car is parked in a parking lot and will be picked up tomorrow. I only have a few vids from before it was totally fucked, but I may be able to get more later. Now I'm really curious about the fact that the car won't start up very easily and even more so about the fact that the tach is reading zero. Any thoughts?
I put the car together and fired it up. The sound was exactly the same. It was just a constant tapping sound. This time, however, we couldn't tell where it was coming from. It didn't sound like it was coming from the driver's side head.
So, we took a few videos, one of which you can see here, and we discussed the matter. We decided to take the car out for a spin to see how it behaved. Perhaps experiencing a moment of poor judgement I ran the car hard on the service road of a highway... real hard. After letting off at the top of third gear I noticed two things. One, the sound was much, much louder. Two, the tachometer was reading zero RPMs despite the fact that the engine seemed to be running fine. We tried starting it one time after we stopped in a parking lot, and we noticed that the starter was having a hell of a time turning the engine over, but it did manage to fire up.
So, at this point, my car is parked in a parking lot and will be picked up tomorrow. I only have a few vids from before it was totally fucked, but I may be able to get more later. Now I'm really curious about the fact that the car won't start up very easily and even more so about the fact that the tach is reading zero. Any thoughts?
Originally Posted by Gauge
Any thoughts?
P.S. I couldn't get your vid to work
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From: Dallas (Richardson), TX, USA
Originally Posted by ArrestMeRed99Z28
Are you sure the pushrods were the correct length to begin with?
P.S. I couldn't get your vid to work
P.S. I couldn't get your vid to work
The vid should work shortly. Just give it time. Streetfire was having a problem just after I uploaded the vid.
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Verdad Gallardo **** man, this is terrible news!
Did you happen to have the front timing cover off the car when to took the heads off? I had my cam bolts loosen up and the big sprocket was wobbling around. The cam had slid back about 1/4 inch and now the cam sensor wasnt over the reluctor groove in the back cam journal, so the tach stopped working. Do you have any codes being thrown?
Did you happen to have the front timing cover off the car when to took the heads off? I had my cam bolts loosen up and the big sprocket was wobbling around. The cam had slid back about 1/4 inch and now the cam sensor wasnt over the reluctor groove in the back cam journal, so the tach stopped working. Do you have any codes being thrown?
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From: Dallas (Richardson), TX, USA
Originally Posted by GuitsBoy
**** man, this is terrible news!
Did you happen to have the front timing cover off the car when to took the heads off? I had my cam bolts loosen up and the big sprocket was wobbling around. The cam had slid back about 1/4 inch and now the cam sensor wasnt over the reluctor groove in the back cam journal, so the tach stopped working. Do you have any codes being thrown?
Did you happen to have the front timing cover off the car when to took the heads off? I had my cam bolts loosen up and the big sprocket was wobbling around. The cam had slid back about 1/4 inch and now the cam sensor wasnt over the reluctor groove in the back cam journal, so the tach stopped working. Do you have any codes being thrown?
Did the vid sound anything like a spun bearing? That was my guess as to the cause of this problem, but I've never heard one.
Originally Posted by Gauge
No, I didn't have the cover off, and I don't have any codes.
Did the vid sound anything like a spun bearing? That was my guess as to the cause of this problem, but I've never heard one.
Did the vid sound anything like a spun bearing? That was my guess as to the cause of this problem, but I've never heard one.
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From: Dallas (Richardson), TX, USA
Originally Posted by GuitsBoy
It didnt really sound like a spun bearing to me, but its hard to tell from the vid. How was you oil pressure, im assuming it was fine. Id try and crack open that front cover if you can. you can take a peek in there without removing the pulley. If you see some loose bolts on the timing gear, ill bet thats your issue. AFAIK, only two things would make your tach stop working, crank pos sensor and Cam pos sensor.
Now my questions are these...
1) Can the bolts actually come out entirely with the timing cover on, or do they not have enough room to back out that far? I'm guessing they don't have room.
2) Do you anticipate that I'll need a new timing cover? Cam retainer plate? Timing chain? Timing gear?
3) Does ARP make some aftermarket bolts that I can use as replacements that may be less likely to back out?
Thanks, Tony. As usual, you're a life saver for me when I screw something up.
1. These bolts may be able to come completely out, however, before they do, the lifters could actually come off the lobes first.
2. Probably wont need anything new, unless it seems really worn out. Mine looked pretty clean.
3. I dont think ARP would really matter. I think using new red loctite and cleaning the surface is more important.
When my bolts backed out, I had used old loctite that had a leak. My guess is that all the hardener had catalized in the tube rendering it useless. When I reapplied I bought a new package of loctite and made damn sure the bolts and the holes were clean and dry (use brake clean).
Sorry I havt been in better contact, Im sick as hell right now.
2. Probably wont need anything new, unless it seems really worn out. Mine looked pretty clean.
3. I dont think ARP would really matter. I think using new red loctite and cleaning the surface is more important.
When my bolts backed out, I had used old loctite that had a leak. My guess is that all the hardener had catalized in the tube rendering it useless. When I reapplied I bought a new package of loctite and made damn sure the bolts and the holes were clean and dry (use brake clean).
Sorry I havt been in better contact, Im sick as hell right now.
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From: Dallas (Richardson), TX, USA
Originally Posted by GuitsBoy
Sorry I havt been in better contact, Im sick as hell right now.
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From: Dallas (Richardson), TX, USA
I took apart the front of the engine tonight, and the bolts holding the timing gear on the cam were all three loose. I took them all out and looked at the back of the gear. Everything looks tip top still, so I guess I won't have to replace anything.
There is one problem I'm seeing, though. As I recall, there was a little peg sticking out of the front of the cam that went through a hole in the gear. I don't know if this served any purpose other than acting as a "key" for the timing gear, but that peg is no longer there. When I look at the front of the cam now, I see three bolt holes and a fourth hole where the peg used to be.
Does anyone have a comment on this weirdness? Am I crazy and the peg was never there??
There is one problem I'm seeing, though. As I recall, there was a little peg sticking out of the front of the cam that went through a hole in the gear. I don't know if this served any purpose other than acting as a "key" for the timing gear, but that peg is no longer there. When I look at the front of the cam now, I see three bolt holes and a fourth hole where the peg used to be.
Does anyone have a comment on this weirdness? Am I crazy and the peg was never there??
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From: Dallas (Richardson), TX, USA
Originally Posted by GuitsBoy
Not sure where to get a replacement and how to press it in though.
Originally Posted by Gauge
Is there any reason to? I can't think of one. As long as I'm aware of the fact that I can put the timing gear backwards I'll be smart enough not to. As long as this is the only purpose of the peg, I'll just focus on where the damn thing is in my engine and then forget about it.
Glad you tracked down the problem though! 
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From: Dallas (Richardson), TX, USA
Originally Posted by DarinsTA
BUt you now have a piece of metal in your oil pan..... The dowel is thera to Lock the gear in the right orientation. If it was me I would get a magnet and try to fish that thing out of the pan....