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Search took 0.15 seconds. Search: Posts Made By: boyt911sc
Forum: Porsche 911 Technical Forum 09-01-2025, 07:16 AM
Replies: 5
Views: 271
Posted By boyt911sc
First you need to do is confirm the absence of...

First you need to do is confirm the absence of unmetered air going into the system. Using a AFM in a system without verifying the absence of air lea/vacuum leak sources is useless. Determine your...
Forum: Porsche 911 Technical Forum 09-01-2025, 06:56 AM
Replies: 8
Views: 193
Posted By boyt911sc
Stop What You Are Doing!

Coach,

Your fuel line to the CSV is broken. I hope I am wrong but the blow-up (zoom) picture shows the banjo fitting has a broken fuel line. And fuel will be spewing all over the motor if the FP...
Forum: Porsche 911 Technical Forum 08-28-2025, 01:48 PM
Replies: 1
Views: 156
Posted By boyt911sc
Deceleration Valve……

Brian,

The top of the decel valve is connected to the backside of the of the throttle body for vacuum. Get an inspection mirror and you will find a vacuum port with a missing hose.

Tony
Forum: Porsche 911 Technical Forum 08-19-2025, 12:58 PM
Replies: 20
Views: 527
Posted By boyt911sc
CIS Troubleshooting………….

Louis,

Based from your information, you have two (2) major problems namely:

Your FP should be running with the ignition switch turned to ON/RUN position (not START).
The cold control fuel...
Forum: Porsche 911 Technical Forum 08-17-2025, 05:57 PM
Replies: 5
Views: 202
Posted By boyt911sc
Rutager, Keep it simple. Use a remote...

Rutager,

Keep it simple. Use a remote starter.

Tony
Forum: Porsche 911 Technical Forum 08-17-2025, 05:51 PM
Replies: 17
Views: 407
Posted By boyt911sc
CIS Troubleshooting…………..

Ben,

Based from your testing (item #4), I suspect there is an anomaly at terminal #85. Do this test to confirm:
1). Connect a CIS pressure gauge to check for cold control fuel pressure.
2). Turn...
Forum: Porsche 911 Used Parts For Sale & Wanted 08-16-2025, 11:04 AM
Replies: 6
Views: 572
Posted By boyt911sc
Never received your PayPal for payment. Tony

Never received your PayPal for payment.

Tony
Forum: Porsche 911 Technical Forum 08-13-2025, 01:09 PM
Replies: 25
Views: 532
Posted By boyt911sc
Dave (Loren), I intentionally did not...

Dave (Loren),

I intentionally did not include Systemsc.com because I knew you would jump in and recommend your company.

Tony
Forum: Porsche 911 Technical Forum 08-13-2025, 12:43 PM
Replies: 2
Views: 142
Posted By boyt911sc
CIS Acronyms……….

Ron,

In this forum we use AAR (Auxiliary Air Regulator) that has the heated bi-metallic and AAV (Auxiliary Air Valve) that has the vacuum valve (no heater). To answer your question, AAR has power...
Forum: Porsche 911 Technical Forum 08-13-2025, 06:02 AM
Replies: 25
Views: 532
Posted By boyt911sc
CDI Loaner…….

Dru,

Are you now back in USA? Last time we communicated you were stationed in Germany. If you need a good CDI to use for your troubleshooting, I could lend you one and send it back to me later. Or...
Forum: Porsche 911 Used Parts For Sale & Wanted 08-13-2025, 05:48 AM
Replies: 2
Views: 180
Posted By boyt911sc
I will take it. PM sent. Tony

I will take it. PM sent.

Tony
Forum: Porsche 911 Technical Forum 08-12-2025, 07:11 AM
Replies: 9
Views: 409
Posted By boyt911sc
Too Small……..

If the tool is marked 10 mm x 13 mm socket, it is too small to remove a spark plug.

Tony
Forum: Porsche 911 Technical Forum 08-06-2025, 10:12 AM
Replies: 19
Views: 303
Posted By boyt911sc
CIS Troubleshooting………

Nate,

The culprit for your hot start problem is your residual pressure loss. Both your WUR and FD are not holding residual fuel pressure long enough. The minimum is 1.1 bar after 20 mins. The...
Forum: Porsche 911 Technical Forum 07-29-2025, 11:22 AM
Replies: 17
Views: 407
Posted By boyt911sc
FP Relay…….

Ben,

Instead of jumpering terminals 87A and 30 to run the FP, try disconnecting the AFS plug and start the motor. Removing the AFS plug would keep terminals 87A and 30 connected (closed) with a...
Forum: Porsche 911 Technical Forum 07-28-2025, 10:26 AM
Replies: 17
Views: 407
Posted By boyt911sc
Where To Go……….

Ben,

On top of the technical forum page (this page) you will see the Blue Banner and go to “Search”, select “Advanced Search”, enter the User’s name (DKLlever48), then select “Find Thread Posted...
Forum: Porsche 911 Technical Forum 07-27-2025, 08:55 PM
Replies: 3
Views: 214
Posted By boyt911sc
Fuel Pump Capacity…..

The SC’s 3.0 liter motor CIS will need a FP with the capacity to deliver 1 liter per 30 sec. (Minimum) or 2 liters per minute (minimum).

Tony
Forum: Porsche 911 Technical Forum 07-27-2025, 08:39 PM
Replies: 17
Views: 407
Posted By boyt911sc
Ben, In item #2 above, maybe you meant 87a...

Ben,

In item #2 above, maybe you meant 87a and 30? There is no 67A terminal in the FP Relay. If you want to fix this problem, I strongly recommend that you read DKLever48’s thread about testing...
Forum: Porsche 911 Used Parts For Sale & Wanted 07-24-2025, 12:39 PM
Replies: 8
Views: 333
Posted By boyt911sc
$400 Correct or a Typo………

Bill,

I bought some stuff from you and always a happy buyer. Are you aware that the FV in the picture is BAD? It has a broken fuel line with a fitting (missing). In this condition it is not...
Forum: Porsche 911 Used Parts For Sale & Wanted 07-22-2025, 05:28 PM
Replies: 9
Views: 208
Posted By boyt911sc
Please provide the Bosch Sticker # on the ECU....

Please provide the Bosch Sticker # on the ECU. Thanks.

Tony
Forum: Porsche 911 Technical Forum 07-18-2025, 07:27 PM
Replies: 14
Views: 1,735
Posted By boyt911sc
Peter, The CIS fuel distributors the SC’s...

Peter,

The CIS fuel distributors the SC’s have adjustable flow rates. You can measure the flow rates of the six (6) ports using graduated cylinders with a fix lift of the sensor plate for 1 minute...
Forum: Porsche 911 Technical Forum 07-18-2025, 07:37 AM
Replies: 17
Views: 477
Posted By boyt911sc
CIS Troubleshooting………..

Vic,

Use a smoke generator and connect it to your CIS. You need just 1~2 psi. of pressurized air with smoke to locate and identify the hard to find air leak source/s. You could build one or buy...
Forum: Porsche 911 Used Parts For Sale & Wanted 07-17-2025, 10:51 AM
Replies: 4
Views: 312
Posted By boyt911sc
Door Stay…….

Payment sent.

Tony
Forum: Porsche 911 Technical Forum 07-17-2025, 09:11 AM
Replies: 17
Views: 477
Posted By boyt911sc
Vic, Your WUR is -045 which is a vacuum...

Vic,

Your WUR is -045 which is a vacuum assisted WUR. You connect the vacuum line to the side port and NOT to the top port which a vent or atmospheric port. There is a discrepancy in your system...
Forum: Porsche 911 Technical Forum 07-17-2025, 08:57 AM
Replies: 17
Views: 477
Posted By boyt911sc
CIS Control Fuel Pressure Tests………

Vic,

There are different ways you can measure the control fuel pressures of your CIS motor. Decide which one is convenient for you. Both will give you same tests results.


First method, with...
Forum: Porsche 911 Technical Forum 07-17-2025, 04:44 AM
Replies: 17
Views: 477
Posted By boyt911sc
WCP With Vacuum………

Vic,

What is your WCP with vac applied? Thanks.

Tony
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