I have a 90 hb with the d16a6 in it and i cant figure out why it stumbles between
5k and 7k rpms? It also misses real bad sometimes. I had drove it to the mountains and it overheated b/c the fan shorted out and the water temp gauge doesnt work....i warped the head . I had $200 worth of shaving and balancing done 2 it and now it misses....didnt b4 the overheat....a guy told me it was b/c the head was moved closer to the block and now i need an adjustable camgear to move either way 2 figure out the miss....i dont no what 2 belive. Please hlp. Thx

 

how much material was removed from the head when you had it resurfaced?

 

map sensor........ do you have a check engine light....

 

-They shaved like 10000ths of an inch

-and my check engine light does come on but only when im pulling out of my driveway....under 10mph for like 5 mins
Someone told me it could be the o2 sensor but iunno?

 

-They shaved like 10000ths of an inch

-and my check engine light does come on but only when im pulling out of my driveway....under 10mph for like 5 mins, but i can turn my switch off then right back on then it goes away.
Someone told me it could be the o2 sensor but iunno?

 

any codes?? did you check and recheck that your timing is in fact set correctly?

with only 10 thousandths of an inch removed, i doubt that would cause a timing belt length issue...o2 would do that to ya tho...im having o2 issues myself, but for entirely different reasons

 

Yea...i need 2 get an o2 sensor....my gas milage is awful in it also....like 210 miles on a tank