Fuel spraying from around the exhaust manifold on cylinder six

Tiny
89YOTA
  • MEMBER
  • 1989 TOYOTA PICKUP
  • 3.0L
  • V6
  • 4WD
  • MANUAL
  • 401 MILES
Just redid the timing belt after buying it from a guy who changed the knock sensor. Got it all back together and it’ll start, run a few seconds then cut off. We started smelling raw fuel so I had someone turn the key while looking under the hood and noticed fuel spraying from around the exhaust manifold on cylinder 6. Please help. I start a new job in a few days and need my truck on the road.
Monday, November 30th, 2020 AT 7:36 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Hi,

That doesn't sound good. Listen, I attached a pic below. The fuel rail on this has two sides. I highlighted areas that could be leaking. Check these things and let me know if you see where it is coming from. Also, be careful.

Joe
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Monday, November 30th, 2020 AT 8:10 PM
Tiny
89YOTA
  • MEMBER
  • 3 POSTS
It’s not leaking from the rail. It’s pushing it out from around the manifold gasket. Could it be that I have vacuum lines hooked up wrong or have the driver side cam out by 180 degrees?
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Monday, November 30th, 2020 AT 8:18 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Hi,

That honestly doesn't make sense. The intake is under a lot of vacuum. It wouldn't push fuel out. Could it be the injector where it mounts? There is an o-ring that could be bad or the insulator isn't properly installed on the intake. See the attached pics.

If possible, could you take a pic of where you see the leak and upload it for me to see?

Let me know.

Joe
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Monday, November 30th, 2020 AT 8:29 PM
Tiny
89YOTA
  • MEMBER
  • 3 POSTS
Yes I can. It’ll be in the morning before I can get you pics.
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Monday, November 30th, 2020 AT 8:34 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Hi,

Sounds like a plan. I have a feeling it is at the injector and appears to be from the manifold. The intake has a strong enough vacuum going through it to prevent what you described.

Let me know.
Joe
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Tuesday, December 1st, 2020 AT 6:06 PM

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