2006 V8 - Procedure draining fuel system

[4runherpow]

Hi,

I ordered a set of Denso fuel injector Remans from MotorWest.

I have a fuel smell coming from the front of the engine at idle and some smell in the cab. I haven't confirmed the cause - could be an exhaust manifold leak or something else I guess (suggestions?) - but I figured the most likely culprit is leaky a o-ring from an injector. When I smell in the engine bay, it's strongest right next to the part of the engine closest to the battery.

Almost 200k so I figured it may be worth doing an injector replacement to restore any flow related issues.

I haven't seen a good write up or video for a V8 4runner fuel injector DIY. I found a Tundra V8 DIY write-up that I assume should work.

However, I didn't see the procedure for draining the system. I need to pull a relay and try to start the vehicle till it runs out of gas?

Any full write-up or the drain procedure or helpful tips would be so helpful!

Thanks in advance -

 

[4runherpow]

Thanks for the tips!

Do you know which relay it is on an 06’?

Also, I’ve heard that starting the engine first then letting it run till the engine stops, then try turning over is a way some have done it.

But I’m not sure about this method.

Thanks

 

[ArthurKotb]

Another possibility is the charcoal evap canister. The symptoms you describe are classic for the evap canister being contaminated with gas. When you fill up your car, do you keep pumping fuel into the tank to round up the dollar amount, especially if it keeps clicking off and you keep pumping? That would be the cause of the canister being contaminated. It forces gas into the canister.

The price is high (of course) for those. A quick Google shows $341, but I don't think they are hard to replace.

Just a thought in case you haven't already eliminated as a cause of the smell.

 

[4runherpow]

Another possibility is the charcoal evap canister. The symptoms you describe are classic for the evap canister being contaminated with gas. When you fill up your car, do you keep pumping fuel into the tank to round up the dollar amount, especially if it keeps clicking off and you keep pumping? That would be the cause of the canister being contaminated. It forces gas into the canister.

The price is high (of course) for those. A quick Google shows $341, but I don't think they are hard to replace.

Just a thought in case you haven't already eliminated as a cause of the smell.

Thanks. I don’t do that, no. But I’m sure there’s still a possibility it’s gone bad. Isn’t that in the back of the vehicle though, near the gas tank?

My smell definitely seems like it’s coming from the engine bay or front.

Has anyone ever had the manifold or Y pipe leak so bad that it smells of gassy exhaust at idle?

Injectors should be here today.

 

[ArthurKotb]

I think it's above the spare tire but I'm not positive. Since you're smelling gas inside the car is the reason I was thinking it was the evap.