Fuel Pressure Check

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Sep 17, 2011 | 10:22 AM

ronjon95

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From: Pekin,Indiana

Fuel Pressure Check

Trying to find the info on which plug to remove for Fuel pressure check. I think one is after the filter and one is before the filter. I read it some time ago, I tried searching for it but it will take all day.

Thanks Ron

Sep 17, 2011 | 10:48 AM

snakedoc

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From: AL, Reform

the lower one is after the filter.
top it before filter.

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Sep 17, 2011 | 11:15 AM

ronjon95

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From: Pekin,Indiana

Great Thanks!! Will be back with results shortly. Should I check it before and after??

Sep 17, 2011 | 12:12 PM

Franko72

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From: Alaska

Quote:

Originally Posted by ronjon95

Great Thanks!! Will be back with results shortly. Should I check it before and after??

Unless your filter is really dirty, the pressures should be the same.

Sep 17, 2011 | 12:14 PM

ronjon95

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From: Pekin,Indiana

Just changed the Filter about a Month ago.

Sep 17, 2011 | 12:18 PM

Franko72

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Quote:

Originally Posted by ronjon95

Just changed the Filter about a Month ago.

prob wont matter then. when I installed my fuel pressure gauge a few weeks ago, I tried both ports with a filter that had 15k on it. There was no difference in pressure between the two ports.
Matter of fact, it didn't change after I put a new filter in either.

Sep 17, 2011 | 01:35 PM

ronjon95

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From: Pekin,Indiana

Back with results!!

Idle 69-70 PSI even after warm up and ran down the road!

Driving on 100 hp position TS Chip dropped to 62 at full throttle for about 5 Seconds. Then back up to 69 -70 PSI.

I have the FPR mod with the lowest pressure spring installed. This is higher than what the spring pressures ratings are or is the ratings under driving conditions?