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  #21  
Old 04-30-2023, 05:06 PM
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Quote:
Originally Posted by andrewwynn View Post
At that age the siphon jet from left side will need refurbishing just needs a new o-ring and a fix find my detailed thread.

The right side has the electric pump which should be replaced by 140,000 miles unless you like getting towed.

There are are a couple hoses that go between the sides but are only attached to the left assembly. Right assembly is solo


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Oooh! Ok. There is another plug and assume opening on the other side.

Time to drain some gas to provide a better answer.

So far, thanks everyone. I'll try to post what I find this week.
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  #22  
Old 04-30-2023, 08:16 PM
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  #23  
Old 05-01-2023, 12:38 AM
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Need help with long crank to start after driving and parking

Get a reading of the current draw when starting. You can measure peak vintage difference from the B+ under hood and your cig lighter port too get a good idea.

On my old e53 you'd multiply the vintage drop by 300 to get starring current eg 0.75v* 300 = 225A. You need a meter that reads peak or you can use a clamp ammeter.

You can change powered pump when tank is 3/4 full no issue. The siphon side you need to get your hands in a ways to deal with connections so 1/2 full or less is better but you do not need to drain the tank. Study up with the two threads I made for the details of fuel supply on the e53 there is literally no better source even bmw tis and repair manual is not as complete or accurate (they copied information from 5 series and is not accurate).

My write up on the Siphon jet details a design defect that allows the siphon jet to self destruct usually about 12-15 years mark. It will happen to 100% eventually and it's a 60 repair where any shop will replace the entire Siphon jet usually $500-900 parts and labor!
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Last edited by andrewwynn; 05-01-2023 at 12:43 AM.
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  #24  
Old 06-19-2023, 03:36 PM
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Originally Posted by andrewwynn View Post

My write up on the Siphon jet details a design defect that allows the siphon jet to self destruct usually about 12-15 years mark. It will happen to 100% eventually and it's a 60 repair where any shop will replace the entire Siphon jet usually $500-900 parts and labor!
What!!? Tell me more. Where is your write up?
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  #25  
Old 06-19-2023, 03:49 PM
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AWR-fix: e53 Fuel pump / siphon pump details
https://r.tapatalk.com/shareLink/top...ink_source=app


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