2004 Toyota Sienna 3.3L wont start, just cranks

20

Asked by Sep 21, 2013 at 08:37 PM about the 2004 Toyota Sienna 4 Dr LE Passenger Van

Question type: Maintenance & Repair

Car will not start. Cranks all day but never fires. Have checked fuel, thats good. Checked
spark, thats good. Intake system no problems. Took to dealer they said broken timing
belt. Pulled front of motor down wasnt broken they then changed story to it jumped timing.
Replaced timing belt and water pump. Also replaced crank sensor. Still will not fire. Im out
of ideas at this point. Any help would be greatly appreciated.

11 Answers

108,725

Do compression test to see if you have any bent valves. I believe your model is an interference engine and if so and it jumped time you might have some bent valves.

4 out of 4 people think this is helpful.

If you got the timing right...I would be stumped too

6 out of 6 people think this is helpful.

.

7 out of 7 people think this is helpful.

Didn't think of that..but right on dandy.

2 out of 2 people think this is helpful.
20

front 3 cylinders between 165-180

1 out of 1 people think this is helpful.
108,725

Those seem to be fine. What about the others?

1 out of 1 people think this is helpful.
20

About to do those now will let you know in a few.

1 out of 1 people think this is helpful.
20

rear cylinders were between 180-210

108,725

Ok did a little digging. Your compression ratio is 10.8:1 on that model engine. Your proper psi operating range should be 162 psi to 216 psi per cyl. Would like to see your psi to be within 5 to 10 psi of each other and on the top side of the operating range. Although your psi appears to be low on the front bank and varying greatly from front to back bank I don't really feel that its a bent valve issue causing them to be low. Normally with bent valves you will see some with 0 psi per cyl. In my opinion your engine should still start with the psi numbers you posted.

3 out of 3 people think this is helpful.
108,725

In the beginning were you driving it and it went dead or did you just try to start it one morning and it would not start? Was it acting differently than normal the last time it did start?

6 out of 6 people think this is helpful.
160

Hi Dandy, My 04 sienna I was driving it and it went dead on the road and would not starts after few cranking (starts within a second and died). Few days earlier I drove it and died once and when starting back, it start fine all day. next day same routine until today.. Any ideas what the issue is, will really appreciated.

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