1996 T100 Toyota, will not start when hot, will start when cold but the engine light is on. Code says LB running lean? Allready replaced converter and sensors.

angelo, do you think that will work? angelo, do you think that will work?

I tried Angelo's suggestion, did not work!
Now I will try yours! I tried Angelo's suggestion, did not work! Now I will try yours!

OK I will have thaat done. it seams if you spray gum oil in the intake it will start, does that help with your solution, but engine light stays on? OK I will have thaat done. it seams if you spray gum oil in the intake it will start, does that help with your solution, but engine light stays on?

So you think there is a leak on the intake side?
That will cause it not to start hot and bring up the codes, running lean LB? So you think there is a leak on the intake side? That will cause it not to start hot and bring up the codes, running lean LB?

It can't be lack of spark, because if I spray gum oil it starts right up, rough for a little while but she smooths out! It can't be lack of spark, because if I spray gum oil it starts right up, rough for a little while but she smooths out!

Some of the other solutions I'm getting is that I might have an intake leak, the fact that if I spray gum oil and it starts. Some of the other solutions I'm getting is that I might have an intake leak, the fact that if I spray gum oil and it starts.

Runs rough for a bit, but after it clears up runs perfect. Runs rough for a bit, but after it clears up runs perfect.

I don't understand what term left bank means, seing its only a 4 banger . Fuel pump as ben replaced and fuel filter.I'll try spraying the vac lines as you suggested.
She runs great when ir starts! But the code still comes up! I don't understand what term left bank means, seing its only a 4 banger . Fuel pump as ben replaced and fuel filter.I'll try spraying the vac lines as you suggested. She runs great when ir starts! But the code still comes up!

runs good runs good

If the egr is closed when hot, the engine would not start just by spraying gum oil in the intake! If the egr is closed when hot, the engine would not start just by spraying gum oil in the intake!

ok their is spark when hot, because if I spray gum oil it does start. I sprayed brake clean after its running and listen for different engine sound and there is no change, I have changed also the temp. sensor unit, . I have disconnected the battery as suggested, to reset the codes. it does start but it runs like its going to fall apart until it warms up.Guys I haven't giviup on you yet! ok their is spark when hot, because if I spray gum oil it does start. I sprayed brake clean after its running and listen for different engine sound and there is no change, I have changed also the temp. sensor unit, . I have disconnected the battery as suggested, to reset the codes. it does start but it runs like its going to fall apart until it warms up.Guys I haven't giviup on you yet!

I have more to add maybe this will help to get an answer...when I disconnect the battery an then reconnect the battery to get the engine light out no matter hot or cold the vehicle starts and runs really, really bad, but engine light is out,. I must feather the pedal not to idle, idles perfect, but to raise rpms Imust feather the pedal, than if I need to take off I must feather the pedal until engine light comes back on, than once light is on it runs perfect until I shut engine off. Than I am back to original problem.. does not start hot I spray with gum oil it starts ok, but code #0171 comes up. MY MECHANIC IS TOTTALY BAFFLED!!! I have more to add maybe this will help to get an answer...when I disconnect the battery an then reconnect the battery to get the engine light out no matter hot or cold the vehicle starts and runs really, really bad, but engine light is out,. I must feather the pedal not to idle, idles perfect, but to raise rpms Imust feather the pedal, than if I need to take off I must feather the pedal until engine light comes back on, than once light is on it runs perfect until I shut engine off. Than I am back to original problem.. does not start hot I spray with gum oil it starts ok, but code #0171 comes up. MY MECHANIC IS TOTTALY BAFFLED!!!

I doing or I should say my michanic is doing everything thats being recommended. So far he as checked for manifold leaks,ok; replaced converter and both sensors fuel filter, temp. sensor; and the code comes up as lb on the 2.7 engine.But it starts ok when cold, but it not start when hot except when you spray gum oil in the intake it will start! I doing or I should say my michanic is doing everything thats being recommended. So far he as checked for manifold leaks,ok; replaced converter and both sensors fuel filter, temp. sensor; and the code comes up as lb on the 2.7 engine.But it starts ok when cold, but it not start when hot except when you spray gum oil in the intake it will start!

Did that, starts cold no engine light, runs terrible until it gets hot. Runs ok after and than light comes back on! Did that, starts cold no engine light, runs terrible until it gets hot. Runs ok after and than light comes back on!

I do have spark, because if I spray gum oil in the intake she starts! I do have spark, because if I spray gum oil in the intake she starts!

I will tell my tech to close the gap. I spray gum oil and she starts? I will tell my tech to close the gap. I spray gum oil and she starts?

No vac leaks, runs fine when it starts cold! No vac leaks, runs fine when it starts cold!

Fuel pump is new! Fuel pump is new!

How could she so good if the pressure wasn't good? How could she so good if the pressure wasn't good?