A miss could show up on a vacuum gauge, yes. If you're dropping spark every once and a while, you're going to drop vacuum as well.The TFS guy said he had never heard of valves binding in the valve guides. He said they are machined with plenty of clearance and their QA process 'guarantees' that that wouldn't happen.
He told me to check my distributor cap!
Could an ignition problem be causing the vacuum gauge needle behavior in my video i posted on Page 1?
I'm pretty sure I would feel the need to destroy something if all this time the problem was my distributor cap...
I put my timing light induction clip on each plug wire to make sure it was flashing properly. Is this a decent test to make sure I'm getting spark?
can you post a vid of your car running? Its easier to see and hear what its doing.
What all is done to the car besides the TFS heads?
I had a vacuum leak at the tube under the intake, that connects vacuum to the fpr, emissions solenoids and brake booster. Made my car idle all jacked up. you prob already know but your fpr runs off vacuum, when the car is static and the vacuum fluctuates it causes the fuel pressure fluctuate.
This is just me. I had issues running your setup.
A tune if you can swing it would probably be the best.
Where I am CA is pretty strict, and I'm on the fence about the efficacy and long term durability of hijacking and changing signals through the J3 port. It wasnt until I went to a stock 93 cobra maf and stock x3z that things smoothed out for me. That is just my case though. I know everyone is different.
One other thing I kept having problems with on mine was the pcv. I tried both motorcraft and aftermarket grommets and a motorcraft pcv. For whatever reason my pcv is almost loose in the intake grommet. Its been the same on the edelbrock rpm intake and track heat. I had it pop out one time while driving and the car straight died plus other weird drivability issues.
The only thing I could do to seal it up on mine was to wrap the pcv in self fusing rubber tape to make it tight and seal in the grommet.
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