99 tacoma

I have a 99 tacoma 3.4, when I let it sit more than a few hours it is hard to start. After it starts it runs rough until it warms up. I try to give it gas during this warm up period and it will sputter out. It runs great once it warms up. Any help will be great.

 

Do 3.4's have a cold start injector? If so that is where I would look first, sounds like it is dumping fuel

 

I'll guess Coolant Temp Sensor but I could be wrong

 

leaking fuel injectors ?? Brings back memories of Jen and Eric

 

I have replaced the plugs and wires. I will try the fuel filter next, just because it is easiest. I am not sure if it has a cold start injector. If the filter doesn't work I'll check that next. Thank yall. I will update if I find it.

 

This would be my best guess, since the issue is clearly temp-related.

 

Well I am not sure on Tacomas as I am new but the Supras from the same era had cold start injectors, and they too are temp related. They are often problematic and will dump fuel at start up and result in the same symptoms as relayed by the op above. Like I said, I am not versed on the 3.4's yet so I could be way off base, just a suggestion