Suzuki Jimny 1.3, 16v, 2002, Hard start! - Suzuki Forums: Suzuki Forum Site
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Old 06-24-2010, 12:11 PM   #1 (permalink)
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Default Suzuki Jimny 1.3, 16v, 2002, Hard start!

I have a beautiful Suzuki Jimny 1.3, 16v, year 2002, engine M13A, 58.000 miles. It has a problem that no service was able to fix it for over 6 months.

When it's warm outside, over 10 degrees C, it starts very hard. Engine is cranking good but it doesnt want to start. After 7, 8 seconds of cranking it finally starts then it's running very good, perfect idle. And if I turn off the engine and I try again this time it starts very yeasy. But if I leave it off for another half an hour it starts again very hard.

When it's cold outside it starts perfect most of the times.

I changed Lambda O2 sensor, I checked Air sensor, there is no check engine light on. At a service they said they put the tester on it and it has no error code stored. But I dont really believe them cause an original Tech tester is a couple a thousands euro.

I thing it's to early for a compression problem.

Suggestions? Thanks..
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Old 06-24-2010, 12:31 PM   #2 (permalink)
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sounds like the engine is fuel starved on startup. Try priming it with a couple pumps of the accelerator peddle before cranking it.
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Old 06-24-2010, 02:19 PM   #3 (permalink)
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Quote:
Originally Posted by Paollo View Post
I have a beautiful Suzuki Jimny 1.3, 16v, year 2002, engine M13A, 58.000 miles. It has a problem that no service was able to fix it for over 6 months.

When it's warm outside, over 10 degrees C, it starts very hard. Engine is cranking good but it doesnt want to start. After 7, 8 seconds of cranking it finally starts then it's running very good, perfect idle. And if I turn off the engine and I try again this time it starts very yeasy. But if I leave it off for another half an hour it starts again very hard.

When it's cold outside it starts perfect most of the times.

I changed Lambda O2 sensor, I checked Air sensor, there is no check engine light on. At a service they said they put the tester on it and it has no error code stored. But I dont really believe them cause an original Tech tester is a couple a thousands euro.

I thing it's to early for a compression problem.

Suggestions? Thanks..

Have you checked the pin out on the diagnostic connector to see if its OBD1 or OBD2? the M13A engine is usually OBD2 so a scanner would be quite cheap.
Have you checked the Coolant Temerature Sensor? what was the resistance of the IAT?
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Old 06-24-2010, 02:35 PM   #4 (permalink)
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IAT is working ok, around 3 kohm at 10 degrees C and 2.3K at 18 degrees C.
What scanner works if it's OBD2?

Tomorow I will check the Coolant Temperature Sensor and I will give it a few peddals before cranking.
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Old 06-24-2010, 02:40 PM   #5 (permalink)
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Quote:
Originally Posted by Paollo View Post
IAT is working ok, around 3 kohm at 10 degrees C and 2.3K at 18 degrees C.
What scanner works if it's OBD2?

Tomorow I will check the Coolant Temperature Sensor and I will give it a few peddals before cranking.
There are many scanners that will work with OBD2. I would suggest a scantool based on the ELM chip because these usually allow you to see live data. Live data will let you see what temperature the ECU is seeing as well as many other parameters.
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Old 06-25-2010, 01:31 PM   #6 (permalink)
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Peddals before cranking have absolutely no effect, I have try it all day. I'm not really sure what is the location of the Coolant Temp Sensor but if it's where I think it is than I don't have acces to it because of the alternator. Anyone has any pics?
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Old 06-25-2010, 01:47 PM   #7 (permalink)
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This is what the FSM says for hard starting:

Hard Starting
(Engine cranks OK)
Ignition system out of order
Faulty ignition coil
Engine and emission control system out of
order
Faulty CMP sensing rotor or CKP sensing
rotor
Faulty idle air control system
Faulty ECT sensor, TP sensor, CKP sensor,
CMP sensor or MAP sensor
Fuel pressure out of specification
Faulty fuel injector
Faulty ECM
Malfunctioning PCV system
Low compression
Improper valve lash
Improper valve timing
Compression leak from valve seat
Sticky valve stem
Weak or damaged valve springs
Compression leak at cylinder head gasket
Sticking or damaged piston ring
Worn piston, ring or cylinder
Diagnosis in Section 6F.
CMP sensing rotor or CKP sensing rotor
inspection in Section 6E.
Diagnostic Flow Table B-4
ECT sensor, TP sensor, CKP sensor,
CMP sensor or MAP sensor in Section
6E.
Diagnostic Flow Table B-3
Diagnostic Flow Table B-1
Inspection of ECM and its circuit in Section
6E.
PCV hose and PCV valve in Section 6E.
Compression check in Section 6A1.
Valve lash check in Section 6A1.
Timing chain and chain tensioner in Section
6A1.
Valves and cylinder head in Section 6A1
Valves and cylinder head in Section 6A1.
Valves spring in Section 6A1.
Valves and cylinder head in Section 6A1.
Piston rings in Section 6A1.
Pistons and piston rings in Section 6A1.

You should be able to download the FSM from one of these two sites:

Home Page - BigJimny Website
www.jimny.se - a site made for Suzuki Jimny and it's owners only
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Old 06-25-2010, 02:21 PM   #8 (permalink)
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Thank you very much!
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