Blue smoke on startup after sitting/after throttle stab

[CruiserInProgress]

Not sure if this would apply to your 1F, but for my 2F I'd be tempted to use a pry bar between the head and the rocker shaft, placing the bar as close to the offending support as possible, while using wood shims to preserve the surfaces.

I would not place the bar in the small gap directly under the support for fear of gouging that machined surface, which also carries oil in one instance on my 2F.

Once the rocker assembly is free, a close examination of all surfaces for cracks or gouges would be in order along with verifying that the rocker shaft is still true.

Depending on how much force was applied on your first attempt to tap and torque it down, it might not be as bad as you think. But that's just me.

 

[charliemeyer007]

Several wood wedges tapped in place might lift it off. +1 for careful inspection. Hand lens and maybe a micrometer or dial caliper rto check roundness, a good straight edge could be useful too.

 

[nachohouse]

Prybar did the trick! It did dent the rocker shaft though. It didn’t gouge it/leave any knurled metal, but there are two smooth dents on each half of the shaft. Pics attached of a dent and the factory notch for comparison.

Wouldn’t the notch keep the shaft from rotating freely once the bolt is in the rocker tower? Do these dents mean my shaft is fubar? Thanks for the help.

 

[charliemeyer007]

Pic 1 small dent should be ok. Couldn't see a second dent.

 

[nachohouse]

Yeah, I only posted the one dent. There are 3 other ones though pretty much identical to that (basically every location where a stud goes through the rocker tower). Think I’m good to run it?

 

[charliemeyer007]

Yea I think its fine, for a while. If you look you can see rocker bushing wear on the shaft. One I had was so bad the rocker tilted when it rotated.

 

[nachohouse]

Haha that’s wild, so it is true what they say: “the 1F is too dumb to die”

 

[CruiserInProgress]

Prybar did the trick! It did dent the rocker shaft though. It didn’t gouge it/leave any knurled metal, but there are two smooth dents on each half of the shaft. Pics attached of a dent and the factory notch for comparison.

Wouldn’t the notch keep the shaft from rotating freely once the bolt is in the rocker tower? Do these dents mean my shaft is fubar? Thanks for the help.

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Glad the pry bar worked for you!

The dent you made might not be an issue, but like Charlie suggested, check it for out of round. You don't want to crack the rocker support and you want it to seat properly when you reassemble.

You could probably do a quick check by running a rocker arm over that area. It should pass smoothly.

Also, check the shaft to make sure it's straight and true.

 

[shipmag]

Glad the pry bar worked for you!

The dent you made might not be an issue, but like Charlie suggested, check it for out of round. You don't want to crack the rocker support and you want it to seat properly when you reassemble.

You could probably do a quick check by running a rocker arm over that area. It should pass smoothly.

Also, check the shaft to make sure it's straight and true.

Dial indicators at harbor freight are inexpensive. I would set the shaft and indicator on flat surface even the kitchen table. Rotate the shaft and see if it's true. A metal plate to hold the magnet on indicator would be better.