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98 metro rebuilt motor; Motor cranks, sparks
Topic Started: Sep 23 2017, 03:22 AM (324 Views)
Glockgeo226
Fresh Fish
[ * ]
Hi guys been having a bit of trouble with my metro. I recently had the motor rebuilt at a machine shop. They set the timing and the valve adjustment for me. So it was easy to just drop in the motor and plug everything up. Everything in the car is new beside the sensors. Gave it gas and still no sputter or even a jerk (can smell gas from all that pumping) Now we tried cranking the motor to start it up and all it did was crank. We checked the fuel, plugs, wires for spark, correct wiring and also plugs in harness, injectors. I dont have a distributor, mine came with glow packs. Check engine light is on too. Im am dumb founded on this problemn i need help geting my car started.

Thabks in advance guys!
Edited by Glockgeo226, Sep 23 2017, 03:22 AM.
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Woodie
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Pull a plug and see if it is sparking, probably not. Make sure all of the ground connections are correct, I think the main sensor and computer ground is on the camshaft position sensor housing (where the distributor should be), the part of the engine closest to the battery. Find a way to read the trouble code your check engine light is complaining about, that might lead you in the right direction. You can get OBD2 dongles that plug into your diagnostic port under the steering wheel and send data to a smart phone via bluetooth. Crankshaft position sensor is known to cause problems along these lines, did the rebuilder put a cork oil pan gasket on it? It's not supposed to have a gasket there, it spaces the sensor too far away from the crankshaft and the computer never gets very important feedback about the engine turning over.
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freegeo
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:gp

Woodie has some good suggestions. Check the codes and see if it comes up PO335. If so the PCM is not seeing a signal from the crank position sensor. Since the engine was just rebuilt, checking to see if they used a gasket would be the best place to start. If they did the gasket will need to be taken off and a sealant will need to be used.

Keep us posted on what you find.
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Dystopiate666
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Tree Banger

I'd probably stop cranking it until you find something.....you're not doing those new rings any favors running them up and down with no fire.
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freegeo
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Dystopiate666
Sep 23 2017, 12:50 PM
I'd probably stop cranking it until you find something.....you're not doing those new rings any favors running them up and down with no fire.
Are you saying that due to him saying he smelt gas? If it had no ckp sensor signal then it most likely is not getting gas.
Edited by freegeo, Sep 23 2017, 06:18 PM.
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CMA


Actually if no sparks then no fuel injector sprays period... it's impossible to spray any fuel if there is no spark... that's part of fuel cut strategy.

That's part of safety reason.

ANYHOW

Quote:
 
mine came with glow packs


I don't recall if metro even came with diesel.... :hmm
Edited by CMA, Sep 23 2017, 07:00 PM.
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freegeo
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You can have a injector spray and the plugs not spark. The ecm/ pcm can send a signal for spark but that doesn't mean the plug has to be getting spark.
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freegeo
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I think he meant coil packs.
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CMA


Okay I won't debate with you.


If it's true then it would be bad or weak coil pack then.



PS. it would be easy if get code?
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freegeo
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CMA
Sep 23 2017, 09:21 PM
Okay I won't debate with you.


If it's true then it would be bad or weak coil pack then.



PS. it would be easy if get code?
Not looking for a debate. When you made the statement below it made me think about the start sequence oscilloscope graphs i did on my car. When the pcm see 2 cmp pulses it sends a fuel injector pulse. After 2 injector pulses it sends a spark signal. Not sure what you are referencing when you say fuel cut strategy?


Quote:
 
Actually if no sparks then no fuel injector sprays period... it's impossible to spray any fuel if there is no spark... that's part of fuel cut strategy.

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Glockgeo226
Fresh Fish
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Okay so i took the crank sensor out checked for a gasket which there was non ( silicon only) then checked the grounds which only found 3, the check engine light read map sensor. The spark this time was a lil stronger. Checked compression so it strong. It felt like it wanted to start but nothing. So now im looking at coil packs. Is there an image that can show the firing order on coils pack?
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freegeo
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What was the code when you checked it? Some sensors have more than 1 code possible. Map codes that are possible. PO106, PO107 and PO108.
Edited by freegeo, Sep 27 2017, 11:31 AM.
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freegeo
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I get home I will look up the firing order.
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MR1 Kingsbury
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Exp. builder/rebuilder

1342. Almost all 4 cylinders have this firing seq. a failed or clogged map sensor will definitely create a run poorly, and may even create a no start. check the vacuum line connected to map sensor, clean and confirm pass through on the little filter thing (that looks like a vacuum check valve) and make sure there are no soft spots to collapse, no cracks, and a good fit on the ends. then unplug the map and check the wires out making sure they are intact and not broken or frayed.
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freegeo
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Coil identification and picture of wiring routing.

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Attached to this post:
Attachments: 98_coils.jpg (145.72 KB)
Attachments: 98_coils_and_plug_wires.jpg (186.51 KB)
Edited by freegeo, Sep 27 2017, 12:12 PM.
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