Valve problems
Valve problems
Hi new guy here with truck issues. 1993 hb 2.4. Recently bought this truck, it has been sitting since 2006 with a bad trans. Replaced trans and it runs great, but sometimes when it is parked over night or several hours, when I try to start it spins over like it has no compression. Also has a ticking sound as it spins. But after it spins for a while it starts. Sounds to me like the lifters are losing their prime or they are getting stuck. I have serviced the engine and added stp. Anyone heard of anything like this before?
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Rev_D21
- Posts: 5946
- Joined: Sun Jan 12, 2003 9:49 pm
- Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed - Location: Somwhere in Western NY
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Re: Valve problems
The hydraulic lifters can become clogged with sludge and cause quite a rattle upon start up. They can also loose their prime and fill with air causing quite a rattle until all the air is purged. Have you pulled the valve cover off the head to check the internals visually yet?
Re: Valve problems
No I have not. They do not rattle. It seems as though after the truck sits for a while they are either holding the valves open or not opening them until they prime back up. The truck spins over with no compression.
Re: Valve problems
It sounds like the timing chain has broke when I start to try and start it. Anyone have any clue?