hey, i just finished a mission with my father. we changed out my pistons with pistons from another block we got at the local u-pick.. anyway, everythings put back and the car turns out for a few seconds then just dies. or it idles at 2000 rpms.. we lowered the idle and now it just does the former. my dad thinks it could be the valce clearance, because we dont exactly have the proper tools for that, but he rigged up something, just not sure what. anyway, he wants to know what happens when the valve clearance doesnt meet factory specs, does this problem occur? my check engine light doesnt turn on when the car starts, so i dont think theres an electrical problem. but when the car starts, if you keep revving, it'll stay alive and rev all it wants, it just dies if you dont keep giving it gas. anyway, any help would be greatly appreciated. thanks.
BTW: its a 92 S13, we got the block and the head from a 92 also. we used the new head, with the old block because the new block was from an auto 240. so we used the new pistons in the old block with the new head. sorry if any confusion.
banky
valve clearance? my car wants to die
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Dattebayo
- Posts: 33288
- Joined: Sun Aug 25, 2002 10:04 am
- Car: 2004 Nissan Frontier Desert Runner
- Location: NE DC
you HAVE to make sure that the pistons first are the right class. There are three different classes of pistons that go in 240 engines, all have something to do with size or something. You may not have matched the class of your old ones to the new ones (its stamped on the top of the piston, 1, 2 or 3). You also are supposed to hone the block and remeasure so you can see if you can still use the same class, or have to go higher. Do a compression check to see if its the pistons (or rings). Otherwise it could be anything, you gotta test all your hoses and electrical.