Oil change, now idles poorly (beginner)

[andrewwynn]

When I rebuilt my DISA I used a hit that dismisses the pin. It uses a long screw that goes through the flap valve and pokes in from the other side permanently eliminating the risk.


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[mcfee03]

Originally Posted by andrewwynn

You could likely get a view into the cylinder with your camera to get an understanding of did the pin get in there.

Use a magnet on that debris and figure out if aluminum or steel. Either way it can cause bad seal on the valves and kill compression.

Were it me I would take out the plugs, inspect each cylinder, clean the mystery metal off all the valves and inspect them all for damage.

Once clean check all the cylinders for compression. If they check out put it back together and start knocking out errors

I jsut tried getting the debris out with tweezers. And it only seems to get this fluff/dirt stuff. And in normal light, it doesnt look like the photo. Maybe the flash has made it look like metal. I'm 80% certain that photo is actually just of dirt.


I don't follow- how could an inspection camera fit inside the valve?

If I take out the plugs- will I get a view inside the valve and be able to definitively see if the PIN is there?

[Fifty150hs]

Originally Posted by andrewwynn

When I rebuilt my DISA I used a hit that dismisses the pin. It uses a long screw that goes through the flap valve and pokes in from the other side permanently eliminating the risk.


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I did the same. The new valve is also made of aluminum. Should last forever.

[Fifty150hs]

Originally Posted by mcfee03

I jsut tried getting the debris out with tweezers. And it only seems to get this fluff/dirt stuff. And in normal light, it doesnt look like the photo. Maybe the flash has made it look like metal. I'm 80% certain that photo is actually just of dirt.


I don't follow- how could an inspection camera fit inside the valve?

If I take out the plugs- will I get a view inside the valve and be able to definitively see if the PIN is there?

If you pull the plugs you will be able to see if the pin is inside a cylinder. You won't be able to see the valves through the plug hole.

[andrewwynn]

Through plug hole you will see the top of the piston and if the pin is in there should be obvious. If the dirt is just fluff vacuum is off


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[mcfee03]

Originally Posted by andrewwynn

If the dirt is just fluff vacuum is off

If the Vacuum is off- what should I do to fix?

Also, I want to put my intake back on.

Is there anything I should check BEFORE I PUT MY INTAKE back on?

[crystalworks]

Originally Posted by mcfee03

If the Vacuum is off- what should I do to fix?

I think that was a typo. I think he meant to say vacuum it off... not vacuum is off.

Definitely clean those valve seat areas and then check the compression chambers through the plug holes to see if there is debris in there. You can rotate the engine by hand to move the pistons up and down so you can get a better look at the top of them.

You can also hand crank the engine to get the valves to open and close on the head so you can check functionality and to help facilitate cleaning those areas before you put the intake manifold back on.

[mcfee03]

Originally Posted by crystalworks

You can also hand crank the engine to get the valves to open and close

I have been advised that before- but however I don't have the fan remove tool (would take weeks to arrive at my location too)...

I can't find a video tutorial either.

Can you tell me where to find instructions on how to do this?

[crystalworks]

Originally Posted by mcfee03

I have been advised that before- but however I don't have the fan remove tool (would take weeks to arrive at my location too)...

I can't find a video tutorial either.

Can you tell me where to find instructions on how to do this?

I don't believe you need to remove the fan. Just get a 22mm (I think, someone correct me if I'm wrong on the size) socket on the crank bolt and turn clockwise. With the plugs removed it will be easy. With them in it will be harder but still easily doable.

[andrewwynn]

Originally Posted by mcfee03

I have been advised that before- but however I don't have the fan remove tool

Stupid easy to remove the fan. The wrench size is 1 1/4 sae should work out to 32mm. Get the wrench into the fan nut and arrange so it is pointing straight up. Then take a BFH and give a quick smack toward the left side of the car. The radiator hose is in the perfect place to catch the wrench. Has never taken me more than 2 whacks to loosen. I guarantee its easier than the official tool.

The official tool is nothing more than a steel bar with two holes that line up with nuts on the fan clutch (with a bite missing so it fits around the clutch body) easy to fabricate. I was going to make my own until I found a YouTube video showing the method I use.

It wouldn't hurt to have a string attached to the wrench in case it came off but there is so little room I'm not sure it's even possible. Obviously the wrench had to be long enough to clear the intake scoop.

First time I removed the fan was to change the thermostat. I've had it off about 3-4 times. It's easy enough to remove I take it off for some elbow room most recently when I DIY refurbished my alternator ($20 kit vs $325 replacement: replaced the slip rings and brushes).

The trickiest part is bringing the shroud up at the same time and finding any mystery clips holding it on.



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