1997 Dodge Dakota Truck will not start, after changing Timi

Tiny
DMLOZADA
  • MEMBER
  • 1997 DODGE DAKOTA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
We changed the timing chain and after putting the truck back together the truck will not start. What could be causing this problem.
Thursday, October 23rd, 2008 AT 10:51 AM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,154 POSTS
Hi:
Are you getting spark and fuel? Does the engine sound normal when cranking?

Let me know, and we'll go from there.
Joe
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Thursday, September 7th, 2017 AT 5:28 PM
Tiny
DMLOZADA
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Yes we are getting spark and fuel. When we were trying to crank it, it even backfired up that is when we stopped trying to turn it over.
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Thursday, September 7th, 2017 AT 5:28 PM
Tiny
JACOBANDNICKOLAS
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Hi:
Listen, if you're getting spark and fuel and it backfireing, the timing is wrong. I'm glad you stopped because it could cause internal engine damage, or it could backfire through the intake and catch fire.

When you put the timing belt on, are you sure the timing marks on the cam and crank were positioned correctly? Also, did you make sure that when the #1 piston was at TDC the rotor in the distributor was pointing at the #1 plug wire inside the cap?

Let me know so I know where to direct you.
Joe
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Thursday, September 7th, 2017 AT 5:28 PM
Tiny
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Ok we took the truck to a repair shop to have the timing redone, the timing was inncorrect. Now they say that either a dead cylinder or a bent valve is the problem can this be correct? We had the valves and cylinders checked before we replaced the timing chain. The only thing that was not checked before we replaced the timing chain was the MAP sensor, can that cause this issue?
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Thursday, September 7th, 2017 AT 5:28 PM
Tiny
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Hi:
I hate to tell you this, but if te timing was out, a valve could have been open and a piston could have hit and bent it. Most manufactures leave enough tolerance in case a belt breaks while the engine is still turning over. However, there are some engines that don't have the tolerance built in to it and the piston at top dead center with a valve open can cause damage.

The map sensor couldn't have caused this problem. If you're questioning the dead cylender, go to the shop and turn over the engine to start it. When it cranks, it will sound funny when it hits the dead cylender. Imagine that all the cylenders have 150psi compression and one has 0psi. The starter will actually speed up for a split second when the dead cylender is going to TDC.

Have they done a compression test on the engine to confirm the cylender is dead?

Let me know what you find. Also, if you have any other questions, don't be afraid to ask. That's why I'm here.

Joe
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Thursday, September 7th, 2017 AT 5:28 PM
Tiny
DMLOZADA
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We had a compression test done before the timing chain was replaced. When we bring the truck home we are going to have another compression test done. We are going to see if it sounds the same as it did when we first started having problems. We went through a long list of things before the timing was said to be the problem. It started with losing power when we were on the turnpike trying to go up a small hill, it would lose a lot of power and sound like it was backfiring it also had a rattle (this happened after we changed the spark plugs) then we changed the wires and distributor cap still had the problem. Then we changed the tbs sensor and still had the problem. We had the catalystic converter changed about a year and a half ago and this really sounded the same so we had that checked and that was still good. Then we had someone tell us that it sounded as though a cylinder was bad then we took it in and had the compression check done and they said it was low but in the ok range and it was the timing chain and you know the rest. I think we are now back to where we started. After we do another compression check if it comes back ok what should we do.
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Thursday, September 7th, 2017 AT 5:28 PM
Tiny
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Hi Again:
Let me know what you find with the compression. If it is ok, we'll work on getting the timing correct unless you already had that done.

Let me know, and we'll work through it together.

Joe
Positive feedback and votes are appreciated.
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Thursday, September 7th, 2017 AT 5:28 PM

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