a friend has an 05 that smokes (blue)only upon cold start-up.
it's worse in high elevations, and it has a miss - rough idle until warmed up.
dealers don't know!
any ideas besides valve guide seals?

 

sounds just like my 06. i had it to the dealer twice.they said i have a leaky injector but it is with in spec. and will not fix it. so know i just live with it. untell it goes out all the way.

 

what about blue smoke?

 

what i have found is over night the injector leaks down a little. and the blue smoke is from the unburnt fuel. mine clears up in 10-30sc.

 

same as his.the trick is to find which one(s)
the dealer said #1 is 85%
could be valve guide seals too.

 

could be valve guides. i don't think so with mine. i only have 19,000 on it. if i where have to pay the bill. i would put all new injectors in. for pice of mind.

 

he's got over 400,000 on it!
how might he diag it?

 

not sure about how to test the valve guides. but if you already know that #1 injector is at 85% I think i would start there.

 

Check the fuel filter, it may be plugged. A year ago I was having rough starts with blue smoke that would last for a minute or more, but it would go away after it had warmed up. Took it into the dealer twice, told them I believed it was leaking an injector, and so did most people on here. Dealer couldn't find anything wrong either time. I changed the fuel filter and bingo, it fixed it.

 

he changed it yesterday.

 

Anyone have any ideas as to diag?

 

he is probably going to have to look into new injectors, could be plugged open or "hanging up". not sure how you would diagnose this properly but if ones already at 85% id start by replacing that one and seeing if it helps or maybe sending them in to get tested and if need be repaired.
suck buts sometimes you have to pony up and just replace the problem thats already known, its the best place to start.especially with 400k on it

 

I understand, but where is the blue smoke coming from?
an injector?
I've heard of stranger things.