Fuel pressure problem - LotusTalk - The Lotus Cars Community
 
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post #1 of 9 (permalink) Old 11-06-2018, 08:21 AM Thread Starter
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Fuel pressure problem

Hi all,

I'm hoping you can help me , I'm sorry if this has been covered before. I changed my fuel pump and replaced the injectors (still stock size ) . The fuel pump runs and is delivering fuel but its not seeming to be enough for the car to run. I have an 05 lotus Elise . And am looking for suggestions as for where to start looking for issues .

Thank you,
Daniel

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post #2 of 9 (permalink) Old 11-06-2018, 09:08 AM
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Step back a bit - why did you change them in the first place? Seems strange to have done that if there wasn't another problem already. As much background and detail as possible will help.

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post #3 of 9 (permalink) Old 11-06-2018, 09:18 AM Thread Starter
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Thank you, I changed it in preparation for changing the fuel injectors to much larger ones . I'm going the route of turbo charging . There were no issues prior to changing the pump/injectors

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post #4 of 9 (permalink) Old 11-06-2018, 09:50 AM
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I guess the obvious then is the wiring - make sure all connections are solid and that everything is connected to what it is supposed to be connected to.

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post #5 of 9 (permalink) Old 11-06-2018, 09:56 AM Thread Starter
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Thank you Caleb , I will double check in the morning and use the multimeter to check that everything is good there, but as far as I can tell it is .

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post #6 of 9 (permalink) Old 11-07-2018, 11:44 AM Thread Starter
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Ok , so the latest is , I checked , it seems like it's the fuel injectors , so I checked the electrical , everything seems fine on that end. For kicks I tried installing some brand new 550cc injectors I had laying around for when I turbo charge it. It now runs (lean as I expected with that ) . Does that mean the other injectors were bad or clogged ? So I guess that means I just need to do a tune or get new injectors that are working ?

Sorry for all the questions and ignorance

Thank you in advance

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post #7 of 9 (permalink) Old 11-07-2018, 01:26 PM
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I'm curious how you connected the 550 injectors as they have a different electrical harness than the stock injectors, at least on my car they do. You say you put in stock size injectors, but what injectors did you install?
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post #8 of 9 (permalink) Old 11-07-2018, 02:52 PM Thread Starter
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The new ones were by AUS and they have an adapter that's $10 ea plug and play. The others were the stock denso ones I don't remember what the size is I'm sorry.



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post #9 of 9 (permalink) Old 11-08-2018, 09:08 AM
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This is a return-less system, so if you put a bigger pump in to prepare for a later upgrade of the injectors.... I am not sure this could be an issue, I am trying to work it out in my head and spit balling.
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