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customstarr |
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King of the Nighttime World ![]() ![]() Group: Members Posts: 116 Joined: 13-February 07 From: Waterford, Michigan - Home of Waterford Hills Road Racing Member No.: 7,531 ![]() |
Good!!! Go figure!?!
I've been chasing this rich condition for a while, and I was betting that the MPS was toast. I measured today with a vacuum pump. Evacuated to 20 Hg - did not drop below 15 Hg within 5 Minutes (tested according to Paul B. Anders D-Jet site specs) only dropped to 18 Hg during that test. Also evacuated to 15 Hg and it held for 5 minutes, only dropping 1 Hg (based on spec found here on this forum). AA's site says that it should hold 15 Hg indefintely. I have to assume that mine is good from a vacuum standpoint. Can I get a second opinion on that so I can be positive? I also tested the MPS coils according to Paul B. Anders D-jet site specs. I was nearly right on the money ohm wise. All said, I have to assume that it is time to move on to the Fuel Pressure - I'll measure that tomorrow. In a strange way, I was kinda hoping it was the MPS. I am soooooo ready to be over this rich mixture issue. Soooooo ready. |
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dr914@autoatlanta.com |
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#2
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914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 7,900 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None ![]() |
Good!!! Go figure!?! I've been chasing this rich condition for a while, and I was betting that the MPS was toast. I measured today with a vacuum pump. Evacuated to 20 Hg - did not drop below 15 Hg within 5 Minutes (tested according to Paul B. Anders D-Jet site specs) only dropped to 18 Hg during that test. Also evacuated to 15 Hg and it held for 5 minutes, only dropping 1 Hg (based on spec found here on this forum). AA's site says that it should hold 15 Hg indefintely. I have to assume that mine is good from a vacuum standpoint. Can I get a second opinion on that so I can be positive? I also tested the MPS coils according to Paul B. Anders D-jet site specs. I was nearly right on the money ohm wise. All said, I have to assume that it is time to move on to the Fuel Pressure - I'll measure that tomorrow. In a strange way, I was kinda hoping it was the MPS. I am soooooo ready to be over this rich mixture issue. Soooooo ready. the pressure sensor should hold yes but the fact that it holds 15 for awhile would not make for a rich rich condition that one could not stand. The fact that it is leaking means definitely that it is on the way out, but I would check first low compression on one cylinder, fuel pressure, and injector spray pattern, and injector color (yellow plug-in ones) Also make sure that someone has not fooled with the sensor causing misadjustment. Many think that by adjusting the sensor they will make it better!!! |
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