what do you guys think?

[pdizzlegti]

Hey guys, just picked my car up last week after getting a engine rebuild done
New block, cam shafts, timing belt, watery pump, throttle body sensor, etc. Day after picking it up, I get rough idle and check engine light. All four cylinder are misfiring and engine is running lean. Run great at acceleration but like **** at idle
I'm taking it back to them Tuesday but after an 8000$ bill do you think it's something they did or missed? Or am I looking at more money?

 

[DerekH]

Is it surging at idle? could be a vacuum leak.

 

[pdizzlegti]

It is. Rpms will shoot up to about 1200 then drip back down to 800 when in park. When in drive but at a red light the car just sputters with the rpms not moving

 

[eurocars]

Tell them to fix it

 

[pdizzlegti]

Lol I am. But Id like to be able to say that it was their mistake instead of then coming back to me and saying I need to buy all new coil packs blah blah blah. It wasn't misfiring before my water pump blew. the day I picked the car up it ran and idled fine. The next day it started the idling issues

 

[Zach L]

Rebuilt engines are horrible. Better off buying a used one from a junk yard. Seriously.

 

[Nitrorea]

If you just picked it up last week after a complete rebuild I'd think the garage would be responsible to fix just about anything that's wrong with it for at least 30 days or so.