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Symptoms Bad Fuel Pressure Regulator m117
Hey everyone,
I'm just wondering, what might be some symptoms of a bad fuel pressure reg? On this 560SEL it has trouble with power under operating temp and if you stomp on the accelerator, the throttle takes a bit to respond to the demand. However if you accelerate slowly it will climb in rpm fine. The vent line at the regulator is broken, I can feel a woosh of air coming out the back of the regulator. This makes me thing the diaphragm is broken and the unit is not maintaining the needed pressure of 6.5 Bar (I think thats the number) I dont have any CIS gauges to put on the system so I can't be 100% sure of the pressure. It just seems to want to stall out occasionally. I think this is due to too much fuel, as I recall reading that the FPR is more of a dampener than a "regulator".. Let me know what you gents think....
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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
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