head gasket???exhaust manifold bolt size?

[cn.anglin]

89 ranger 2.3 running poorly under acceleration.did compression test and had 0 compression on #2 and #3 cylinders. pulled head and engine appears to have been rebuilt not long before i bought it. no ridge on the cylinders at all.extemely clean head. couldnt see a bad place in the head gasket but it didnt come off easy so it may have had a bad place.cant find any cracks in head.head bolts didnt feel to be torqued at 90 lbs. should i take the head in and make sure it isnt warped? is it common to warp a cast iron head?also does anyone know the size of the exhaust manifold to head bolts?

 

[cn.anglin]

the exhaust bolts are m10 x1.50 if anyone needs to know.took head in and it wasnt warped.had a valve job and now the truck runs good. the only problem is the check engine light is on and the tach doesnt work anymore.anyone else ever have this happen?

 

[cn.anglin]

intake coil pack wasnt plugged up good.no more check engine light and the tach works now

 

[88_Eddie]

welp, guess you got it figured out lol. my guess on the bolt size would have been wrong anyhow. i was thinking m8 1.25