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Join Date: Aug 2022
Location: San Jose, CA
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Fuel Control Pressure Test

Hi all,
Is it 1.1 bar too low for cold pressure on WUR 0438.140.089?

Thanks,
Khuong

Old 10-21-2024, 09:30 AM
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Cold Control Fuel Pressure Chart……….

Use the control fuel pressure chart for your specific WUR (0-438-140-089).

Tony
Old 10-21-2024, 10:41 AM
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You will need to know what temperature you have to use the chart.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.

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Old 10-21-2024, 01:52 PM
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Tnanks for your respond.

Below are the test result.

Fuel Control Pressure Test on 1980 Targa SC

WUR Bosch Part #:
0438.140.089

Temperature C:
17.6

System Pressure:
4.85

Cold Pressure:
1.1

Warm Pressure without vacuum / with vacuum / time:
1.1 / 1.8 / 00:00
1.8 / 2.0 / 00:01
2.3 / 2.7 / 00:02
2.7 / 3.2 / 00:03
2.8 / 3.4 / 00:04
2.8 / 3.4 / 00:05
2.8 / 3.4 / 00:06
2.8 / 3.4 / 00:07
2.8 / 3.4 / 00:08
2.8 / 3.4 / 00:09
2.8 / 3.4 / 00:10

Residual Pressure:
Closed valve:
4.8
Shut down FP:
2.6
After 10 miuntes:
1.6
After 30 miuntes:
1.6

Thanks again.
Khuong
Old 10-21-2024, 05:49 PM
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Quote:
Originally Posted by boyt911sc View Post
Use the control fuel pressure chart for your specific WUR (0-438-140-089).

Tony
Hi Tony,
I checked the graph and it looks like too low at temp 17.6 C.

Thanks,
Khuong

Old 10-21-2024, 05:58 PM
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