Cam problem after doing rear tensenor....

[philallemang]

Everyone hears it.....that stupid rear tensenor going bad or a chain going bad. So yesterday I took the time and took it part. In order for me to get the tensenor out, I took out the rear exhaust cam that way i could also put in a new cam seal. Well, being an idiot that i was i didn't look at it when i took it apart. So I follow the Helms manual and got it back together.

In the same time I put on new plug wires and changed out the injectors to 3.2l ones cause I was thinking they were better than mine. I pretty sure that 3.2L will work without messin git up. Well, I left the DIS unpluged and cranked a few seconds so that everything had oil before i started it. Plugged the DIS back in and now it idles bad but after 1800-2000 rpm its sound fine all the way up. After 2000 rpm, I got a cam bearing that sounds like its dry. I cleaned everything and used the oil with my fingers from the head to oil them back up before I put the cam back in. When putting my head to the right side of the rear bank, (near driver) that is where i think it is.

Bad idle.....

1) the injectors are bad,
2) iam off on the timing not every much with the exhaust cam, ( has to come off because of bearing)
3) injectors are from a 3.2

Cam sound.....

1) one of the bearings is dry
2) one of them is rubbing up against something
3) I installed one of the bearing in backwards

Sorry for the long post but need some help.

 

[slickn56]

Did you use new gaskets around the fuel injectors? I bet that is exactly what it is. I had a similar problem when I was working on my brother's friend's sho. As for the bearing...i just hope it isnt screwed.

Nick

 

[philallemang]

The gaskets and o-rings looked really good when I put the injectors back in.

Iam going to take it back apart and look EVERYTHING over. I have the idea that the cam is because I put the bearing back on the wrong way. Instead of it pointing the right way its backwards or might have gotten one of them messed up but i was really careful when I set it all aside in order.

Far as the injectors iam going to put the old ones back in and see if that makes a difference.

 

[Mr Anonymous]

Cam bearings? You mean the journal caps, right? There are not cam bearings in the SHO motor.

The journal caps have arrows pointing to engine front (along with numbers and I or E marks), which if you followed the Helms you probably saw and hopefully installed correctly. If you did install one backwards, you may very well have fragged both the cam and the head if it resulted in enough of a ridge to gouge the race. It would be unlikely that one journal is running 'dry'. Even if you didn't **** it at all, you did prime the motor and unless the oil passage somehow got blocked, the race should be getting lubrication.

By any chance did you remove the cam chain sprocket(s)? If so, you might have had the bolts loosen on you resulting in a wobbling sprocket and the noise. Check that first since you may not have to disassemble anything any further if that's all it is. Did you replace both the tensioner and chain, or just the tensioner? If you followed the cam alignment procedure from the Helms you shouldn't have a timing issue.

The 3.2L injectors should work OK, although I would have only installed them as a maintenance item (with 6 known good injectors), and not because they are 'better' than the 3.0L injectors since you wouldn't see a performance gain from them. Regardless of injector flow rate, the PCM is going to adjust the fuel pulse width to reach the correct mixture. IIWM, and I knew that the 3.0L injectors you removed were good, I'd just put them back in.

Ultimately, you're not going to know anything until you open the motor back up and have a look.

 

[philallemang]

So far iam concluding that I put a journal (thanks Mr. Anonymous) on backwards on the exhaust cam. I never any of the intake journals off so i know they are right.

I know i have never had the TOTAL time of the car running more than 1 min. I heard that there was a big problem and shut it off and came straight to the good ole forum.

oh ya what is the cyclindar number order? Not firing order I dont trust the Helms because it shows the coil pack different than mine cause mine has it stamped on it.

BACK OF CAR

BACK Head-- 1,2,3
FRONT Head-- 4,5,6


Is this correct?

 

[91taurisho]

BACK OF CAR

BACK Head-- 1,2,3
FRONT Head-- 4,5,6

Yes this is correct!

 

[philallemang]

Well, good new!!! It fine again.

I just took everthing apart and when from there. Nothing was put in wrong or in backwards. So I said what the ****, I took of the cam journals which looked fine and put some engine assembly grease on them and put it back together.

So I really dont know that it was and the 3.2L injectors were fine. It was the damn IAC. madflame