'06 Forenza Broke Down and Won't Start - Suzuki Forums: Suzuki Forum Site
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Old 11-09-2017, 10:58 PM   #1 (permalink)
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Default '06 Forenza Broke Down and Won't Start

2006 Suzuki Forenza L4-2.0L, Base Model, 168k miles, Manual transmission

I was on the freeway the end of July and I heard a pop and a whoosh. I then started losing power. I downshifted and was able to rev the engine up (the tachometer showed higher RPMs at least) but there was no power to the road. I coasted over to the shoulder and noticed that the engine was starting to over heat and the check engine light was on.

I shut the car off and turned on the heater. I looked under the car and popped the hood, didn't see any leaks or lose hoses or anything out of the ordinary. I popped the cap to the coolant reservoir and the coolant was bubbling but didn't boil over.

After the car cooled down I tried to start it and it wouldn't start. I tried a few times while waiting six hours for a tow, battery ended up dying.

I wasn't able to clear a space in my workshop to push it in, trickle charge the battery and start looking at it until recently.

Because the battery died it wiped the check engine light and the OBD-II reader I have doesn't pull any codes.

I replaced the spark plugs because it was about time anyway. It's also due for an oil change soon but didn't want to do that until I got it running again.

When I try to start the engine it sounds like it's been choked out somehow, either no air or no fuel (or both?). Thinking it might be the fuel pump I hooked up a fuel pressure gauge to the fuel pressure port and the car maintains fuel pressure (though a tad low, it's at 50psi instead of between 55 - 57psi) over time and while trying to start the car.

I removed the air intake and throttle body. The throttle body it's self visually looks fine, however the lower inside portion of the throttle body and the air intake manifold are coated with black goo. I understand that this is common for higher mileage vehicles but it does seem a little excessive, though not extremely so.

After replacing everything and trying to start the car again I removed the cover to the air filter and there was a small amount of white smoke coming out of the hose into the air filter compartment and the smell of fuel.

I don't have the money right now to have it towed to a mechanic and have them look at it when I don't know what needs to be fixed. I'm unsure of how to proceed and am hoping that this forum might provide me with some insight on what the issue might be.
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Old 11-10-2017, 12:15 AM   #2 (permalink)
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The fuel pressure is OK,

Check for spark, if OK

then remove the front O2 sensor and try starting..

If still no joy, time to do a compression test

... Philip
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Old 11-13-2017, 03:08 AM   #3 (permalink)
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Spark Test:
1 = Ok
2 = Ok
3 = Ok
4 = Ok

Removing the front O2 sensor had no effect.

Compression Test:
1 = 50psi @ 5 seconds
2 = 0psi
3 = 0psi
4 = 0psi

I also heard a popping sound that seemed to come from the air intake on two different occasions just as I was turning the key to try and start it.
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Old 11-13-2017, 11:28 AM   #4 (permalink)
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Quote:
Originally Posted by Rayne.Viktoriae View Post
Compression Test:
1 = 50psi @ 5 seconds
2 = 0psi
3 = 0psi
4 = 0psi
Good indication that the valves are bent, timing chain issue..

Leak down test or pull head... depending on mileage a replacement engine might be better choice..

... Philip
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Old 11-13-2017, 09:52 PM   #5 (permalink)
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Is this an interference engine?
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Old 11-13-2017, 10:08 PM   #6 (permalink)
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Quote:
Originally Posted by avisitor View Post
Is this an interference engine?
YES! Always has been...

... Philip
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Old 11-14-2017, 12:56 AM   #7 (permalink)
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Alright... I think I've found the problem:

https://ibb.co/ey96fw
https://ibb.co/fPVe0w
https://ibb.co/cKm8tG
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