Engine cold and missing on acceleration?

[alchik]

I've got a 2000 4runner v6 4wd that had been running fine till it started getting cold. When I first start it up in the morning it starts fine, idles fine, drives good till I get to the highway and when I start to quickly accelerate at around 45mph or so it sort of stumbles/misses a couple of times. If I keep the same acceleration it goes through it and does fine. If I accelerate a bit more it stumbles more. All this stops after its been running for about 10-15 minutes and is up to temp. I'm a bit stumped as to what it could be. Naturally I'm thinking plugs/plug wires and maybe a sticky EGR valve. Anyone familiar with these symptoms and have a better idea as to what to check?

Thanks!

 

[raydouble]

How many miles since the last plug/wire change?

The 5VZ has no EGR system.

Fuel filter?

Check engine light?

 

[alchik]

Quite a few miles since the plug/plug wire change. I'm planning on changing them this weekend.
Didn't know that about the egr though I would have found out once I started searching for parts I suppose.

 

[alchik]

Well, I changed my plugs and PCV valve and now I'm no longer have the problem! The odd thing was the back 2 spark plugs on the driver's side (Which are a bit hard to access) were only in a bit better than finger tight. Not wobbly but zero effort to get them out. The plugs actually looked ok but that doesn't mean much. The PCV valve was a bit sticky but not really bad though it could have been stickier cold. I suspect it mostly likely the plugs not being torqued in all the way or just a bad plug. I got a new fuel filter but the old one is rusted on pretty good. Tried PB and Liquid Wrench but it's still stuck. I really don't want to get new fuel lines but it may come to that....

 

[raydouble]

Good to hear :cheers:

Glad it was something easy.