Bowling3217

Alright I cracked my intake manifold about 3 or 4 weeks ago and got the improved aluminum crossover intake manifold and all new gaskets I got it all back together and it ran fine. The other day I got on it and it was full throttle and when I got to 4500-4800rpm it felt like I just left off half throttle even though I was still full throttle, right after that my coolant light came on and I just thought I might have a bad sensor because I shouldn't be leaking coolant because I just fixed the manifold. So I drove straight home and my temp stayed the same the whole way and when I got home I checked and my coolant was low and there was coolant on the back right below the intake manifold and I have no clue what it could be and why it's bogging Down

WhiteFoxGT

well its either residual stuff left behind, or you have a new leak somewhere

as for the bogging, you most likely spilled coolant down the plug holes...its causing the spark to jump. Pull the coil packs out and I bet you have coolant all over them

Z28KLR

Heater hose blow off maybe? +1 on checking for coolant in the spark plug wells.

Camster

You might have an issue with the manifold installation.
Mine had a leak when I first did it-I don't know what I may have done wrong-the job seemed straight forward enough.
I dismantled it,got a new pair gaskets,put a thin schmear of sealant around the front and rear water passages before putting on the gaskets,and she's been perfectly dry for the last 16 months.
I agree about the plug wells.
You might have cracked the manifold neck that feeds the heater.

Bowling3217

I was completely dry and no coolant anywhere until I noticed it bogged down

WhiteFoxGT

so did you pull the coils and check?

uberstang1

+1 on checking coils.