a/f leak

Celto · Dec 8, 2019

hello all new here...... we got a 2015 LR4 a couple of months ago which is now showing an a/f leak.... I pulled the top cover and ductwork bits and pressure tested to 15 psi...saw some a/f running out behind the crank pulley.. checked with a mirror and couldnt find where it was coming out of the waterpump but if i looked by the throttle body under the super charger i could see a/f ugh.....thanks all in advance

Celto · Dec 8, 2019

i guess question i didnt want to ask is can the waterpump leak out the back if the gasket was bad i know they generally leak in front or does the SC have to come off?

Edward2595 · Dec 9, 2019

I just took off the supercharger and rebuilt the snout, walnut blasted my valves, replaced the drivers side valve cover, spark plugs and replaced the rear heater tube along with the newly updated front crossover pipe, water pump, thermostat and a few various hoses. You can pull the waterpump without pulling the supercharger. It sounds like most likely your crossover pipe that bolts to the engine block might be leaking. It can be removed without pulling the supercharger but will be difficult. If I remember right you may have to remove the snout as Fuji did in his supercharge rebuild thread to access it.

Celto · Dec 10, 2019

thanks for the reply i have everything removed .......down to draining the system and pulling the pump so i pressurized it again..... looks like it is coming down right where that tube with the o ring is...ordered new pump guess the only way is to replace that refill system and pressure test again?at 59000 what elseis likely to go ?

Celto · Dec 12, 2019

hi all got pump off lube or no lube on o rings and gaskets thanks

Edward2595 · Dec 13, 2019

No lube, just make sure all the mating surfaces are clean.

Celto · Dec 14, 2019

hi thanks got the new pump on and pumped up system to 15 psi again ugh still leaking what is the best pdf to get to show crossover pipe replacement..... also i am a little confused as to what i need for parts thanks the picture of the replacement part doesn't look like all of it thanks......is it the large crossover piece thats visible that fails or something out of sight just eliminating things here i noticed the new water pump dose not have a o ring in it for the outlet pipe the one that came with the kit per their video shows replacing that for the outlet pipe is the water pump supposed to have one ? the outlet tube is different so im assuming not

a/f leak

Celto

Member

Celto

Member

Edward2595

Active Member

Celto

Member

Celto

Member

Edward2595

Active Member

Celto

Member

Similar threads

Latest posts

Members online

Forum statistics

Share this page