First valve adjustment on 82 911 SC..wow not good yet

[avsarinana]

Originally Posted by ant7

If you didn't move the adjusters much, [fraction of a turn]then i would also be inclined to think spark plug wires broken, if the tappets are too tight, then the valves will not close, therefore, that/those cylinders will not fire up, or they will miss-fire, i would first check the spark plug wires, make sure the metal connectors in the ends havent come out, then, as others have said, try and i identify which cylinders are not firing, you can check this by either pulling the plug leads off, [use a very well insulated pliers, or grips, and rubber gloves to be safe]one by one, and hearing if the engine rpm changes, or, check the heat of each exhaust pipe coming directly out of each cylinder, Warning! if the tappets have been adjusted way too tight, then there is a possibility of valve to piston contact, but you say you didn't adjust them by much, so i would suspect that to not be the case.
Hope this helps.
Anthony.

What is adjusting to tight, I was able to slide the feeler gauge back and forth on each valve... Can you be to tight and still not be able to slide the feeler gauge back and forth..

Thanks

[mreid]

People rarely get the valves too tight unless they use the wrong feeler gauge. Typically they are too loose if anything given the locknut pulls the foot away from the valve stem or they don't have the rocker on the cam base circle.

Your problem is not valve adjustment. You either have the plug wires installed incorrectly or screwed up the ignition in some way. Did you change the plugs?

[avsarinana]

Originally Posted by mreid

People rarely get the valves too tight unless they use the wrong feeler gauge. Typically they are too loose if anything given the locknut pulls the foot away from the valve stem or they don't have the rocker on the cam base circle.

Your problem is not valve adjustment. You either have the plug wires installed incorrectly or screwed up the ignition in some way. Did you change the plugs?

Yes I changed the spark plugs and verified that they were gapped...they were properly gapped straight out of the box...each spark plug went in smoothly...

[timmy2]

Swap in the old plugs and see if that fixes it. They can be no good right out if the box.
What brand and type of spark plugs did you use?

[69-912-swt]

NGK=No Good Kind
Was words of wisdom from a Old German Mechanic many moons ago

[avsarinana]

The plugs I installed were Bosch , I'm starting to think something is up with the plugs also.. ? First thing in the morning, I'm going to re - install my old plugs.... And try that. All it takes is one faulty plug for it to run bad

[avsarinana]

Is there a way to verify if a spark plug is good straight out of the box

[ant7]

If you can slide the correct size feeler guage between the cam lobe, and rocker foot, then thats not your problem, its electrical i am 90% sure of that, spark plugs, distributor, plug leads etc.

Originally Posted by avsarinana

What is adjusting to tight, I was able to slide the feeler gauge back and forth on each valve... Can you be to tight and still not be able to slide the feeler gauge back and forth..

Thanks

[wayne robson]

A few items that may help you,
You say you changed plugs,the correct procedure is to check your valves
first before removing plugs,here is why if you removed the plugs first,because it
makes it easy to turn the engine over while checking valve clearance,but what can happen is while doing this carbon pieces can fall from the plugs or cylinder chamber and into the valves, so when checking clearance not getting correct spec. new plugs should be changed after.Also another source while threading your plugs in using the factory socket
you always have to be careful not to crack the side enamel on any plugs, as that will also
give you a bad miss.
go to www.google .com-----put in the words,---how to check valve clearance on
Porsche 911.-----our host Pelican has really info on there,regards.

[avsarinana]

Originally Posted by wayne robson

A few items that may help you,
You say you changed plugs,the correct procedure is to check your valves
first before removing plugs,here is why if you removed the plugs first,because it
makes it easy to turn the engine over while checking valve clearance,but what can happen is while doing this carbon pieces can fall from the plugs or cylinder chamber and into the valves, so when checking clearance not getting correct spec. new plugs should be changed after.Also another source while threading your plugs in using the factory socket
you always have to be careful not to crack the side enamel on any plugs, as that will also
give you a bad miss.
go to www.google .com-----put in the words,---how to check valve clearance on
Porsche 911.-----our host Pelican has really info on there,regards.

I left the spark plugs in when I was doing the valve adjustment, then changed the spark plug after..removed the plugs with factory socket

[avsarinana]

Originally Posted by timmy2

Swap in the old plugs and see if that fixes it. They can be no good right out if the box.
What brand and type of spark plugs did you use?

Put in old plugs same result, still running rough... ?

[avsarinana]

What kind of resistance readings, should I get when testing spark plug wires. The spark plug wires look original to the car.. car has 117,000 miles

[turbo owner]

Originally Posted by avsarinana

Put in old plugs same result, still running rough... ?

So, you put all the old parts back on the car and it still runs bad, just leaves the valves in question then.

[avsarinana]

Originally Posted by turbo owner

So, you put all the old parts back on the car and it still runs bad, just leaves the valves in question then.

Your right at this point its either the spark plug wires or I F$ck up the valve adjustment. I know its not the rotor and cap, I put back all the old spark plugs, and it still runs like crap.

[dicklague]

I have one of these and it is great to test spark at each cylinder.

maybe you can borrow one.

[timmy2]

Originally Posted by avsarinana

What kind of resistance readings, should I get when testing spark plug wires. The spark plug wires look original to the car.. car has 117,000 miles

Going by memory here, I think 4K ohms overall is normal.

[85911]

I just changed my wires on my '85. All were 2.9-3.0 kohms.

[mreid]

Based on your description, I don't think your issue is valves. I think you cracked some plug wires internally when you pulled the wires to install new plugs or knocked a vacuum line off it's fitting. Just doesn't sound like a valve adjustment problem.

[jlex]

Originally Posted by mreid

Based on your description, I don't think your issue is valves. I think you cracked some plug wires internally when you pulled the wires to install new plugs or knocked a vacuum line off it's fitting. Just doesn't sound like a valve adjustment problem.

Agreed, unless you totally got the cylinders mixed up when doing the valves.... but that's not likely as I think you said you've done valve adjustments before.

[avsarinana]

Originally Posted by jlex

Agreed, unless you totally got the cylinders mixed up when doing the valves.... but that's not likely as I think you said you've done valve adjustments before.

Well im just fully confused, at this point... I'm hesitant to drain the oil and re-check the valves?

Im ready to take my car to a repair shop and get it going, and re-group and give it another try at a later date.