460 Passenger side fuel pump gasket replacement
#61
Intermediate
This is what mine looks like after reinstallation of that fuel line. Yours looks to be the same as min and on correctly from what I can tell. Keep doublechecking your work you may see something else that is the culprit. There are multiple fuel leak sources from each pump including at the pulsation damper connection, metal tubing connection and rubber connection to the pump and nipple. As I understand it, the gasket and o rings on the valve cover cause oil leaks and not fuel leaks if they are not functioning or attached correctly.
Last edited by AZGS4; 02-01-21 at 09:47 PM.
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zattack917 (09-04-21)
#62
This is what mine looks like after reinstallation of that fuel line. Yours looks to be the same as min and on correctly from what I can tell. Keep doublechecking your work you may see something else that is the culprit. There are multiple fuel leak sources from each pump including at the pulsation damper connection, metal tubing connection and rubber connection to the pump and nipple. As I understand it, the gasket and o rings on the valve cover cause oil leaks and not fuel leaks if they are not functioning or attached correctly.
thanks for the pic. Maybe I didn’t tighten the two big bolts tightly enough? Ugh. Man! So much work to just access the bolts/screws!
#63
Pole Position
To avoid guessing to need to use torque specs defined by Lexus. I don't have my manual nearby right now, if nobody provides it, I will try to find out it.
Did you replace/install aluminum washers on the fuel pumps? If you reused old ones, did you make sure there are no scratches on the old ones?
Did you replace/install aluminum washers on the fuel pumps? If you reused old ones, did you make sure there are no scratches on the old ones?
#64
To avoid guessing to need to use torque specs defined by Lexus. I don't have my manual nearby right now, if nobody provides it, I will try to find out it.
Did you replace/install aluminum washers on the fuel pumps? If you reused old ones, did you make sure there are no scratches on the old ones?
Did you replace/install aluminum washers on the fuel pumps? If you reused old ones, did you make sure there are no scratches on the old ones?
yes I reused the two metal washers. I’ll try to retighten today and see what happens. I know the smell is coming from around the fuel pump though because I’ll stick my head there and I can smell it. It would really suck if I have to undo those two bolts and redo. But I guess I have no choice at this point lol
#66
Pole Position
Fuel pressure pulsation damper torque = 36 Nm
Fuel pipe sub-assembly torque = 30 Nm
Fuel pipe sub-assembly torque = 30 Nm
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zattack917 (09-04-21)
#67
thanks!! I made sure they were tight today! They’re definitely on tight. But I do smell gasoline that’s coming out from there. It’s weird how it’s only on the passenger side though. Is it possible that I need to change those 2 metal washers ? I do happen to have 2 new ones... but ugh to have to remove it would be such a huge pain! I don’t see any liquid gasoline anywhere though. Should I still be worried?
#68
the gasoline smell wouldn’t be coming from the fuel pump gasket right?? If anything, it’d be from the sub assembly attachment and the damper valve attachment (2 metal washers) right? Definitely not from the fuel pump gasket right?
#69
Pole Position
You try using a LED light to detect gasoline mist. If the leak is strong enough, you might be able to track it.
#70
#71
Intermediate
Agree, the fuel pump gasket seals to the valve cover and prevents oil leaks.
#72
To avoid guessing to need to use torque specs defined by Lexus. I don't have my manual nearby right now, if nobody provides it, I will try to find out it.
Did you replace/install aluminum washers on the fuel pumps? If you reused old ones, did you make sure there are no scratches on the old ones?
Did you replace/install aluminum washers on the fuel pumps? If you reused old ones, did you make sure there are no scratches on the old ones?
The following users liked this post:
zattack917 (09-04-21)
#73
Anybody have list of part number required for this job? I assume two gasket and o rings, anything else am I missing? I can't find the part number for o ring though
#74
If somebody want to verify that's this is applicable to 2011 that would be great too
https://www.clublexus.com/forums/ls-...l#post10497528
#75
Broken stud