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Old 09-06-2013, 04:21 PM   #1
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running lean?

Would running lean or rich cause white smoke and trouble staying running when I first start the car sometimes in the morning sometimes when is been running awhile. I have yet to find my coolant leak but it's decreased greatly since I replaced the water pump and thermostat. But while I was poking around under the hood today I noticed I could smell gas while the motor was running and thought maybe running rich or lean could cause the problem.
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Old 09-06-2013, 06:19 PM   #2
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Running rich will cause black smoke, white smoke is from coolant burning.
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Old 09-06-2013, 06:29 PM   #3
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Wouldn't there be other symptoms of head gasket leak though? My old Nissan had a blown head gasket and it was running terrible and wouldn't get over 45. But my camaro is running fine the oil doesn't look milky, the only problem is the white smoke and slow loss of coolant. It's a 305
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Old 09-06-2013, 06:44 PM   #4
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Quote:
Originally Posted by bowtie.maniac93
Wouldn't there be other symptoms of head gasket leak though? My old Nissan had a blown head gasket and it was running terrible and wouldn't get over 45. But my camaro is running fine the oil doesn't look milky, the only problem is the white smoke and slow loss of coolant. It's a 305
Not necessarily. I'll tell you what that 305 is about a million times stronger than that Nissan. I would argue anyone that that is debatably the strongest v8 that was produced. And I had a literally melted apart seal (that should give you an idea of how hot it had gotten) and I drove it for like 2-3 years like that... It was still beastly for a stock engine. I could go out and roll on quite a few of the more popular cars... It didn't feel like it affected performance at all... However, she ran hot if I didn't top her off every couple days...
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Old 09-06-2013, 06:49 PM   #5
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So basically I need to pull the heads off and have em trued up and take a real good look at the block and maybe have the intake trued up while I'm at it?
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Old 09-06-2013, 06:53 PM   #6
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Quote:
Originally Posted by bowtie.maniac93 View Post
Would running lean or rich cause white smoke and trouble staying running when I first start the car sometimes in the morning sometimes when is been running awhile. I have yet to find my coolant leak but it's decreased greatly since I replaced the water pump and thermostat. But while I was poking around under the hood today I noticed I could smell gas while the motor was running and thought maybe running rich or lean could cause the problem.
Gas smell under the hood could be a cracked evap system hose.
That's where it was coming from on mine.
The little S shaped hose to the solenoid was cracked.

Trouble running when you first start could be the IAC ( idle air control )
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Old 09-06-2013, 06:54 PM   #7
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Ok thanks. I'm more worried about the coolant now because this is my daily driver
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Old 09-06-2013, 07:59 PM   #8
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Originally Posted by NavyVet View Post
Gas smell under the hood could be a cracked evap system hose.
That's where it was coming from on mine.
The little S shaped hose to the solenoid was cracked.

Trouble running when you first start could be the IAC ( idle air control )
Could you assist in me finding this on a 98 v6? My car has a major gas smell and i believe is leaking. would this cause poor milage and an 02 sensor on the exhaust manifold to go off
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Old 09-06-2013, 10:18 PM   #9
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Could you assist in me finding this on a 98 v6? My car has a major gas smell and i believe is leaking. would this cause poor milage and an 02 sensor on the exhaust manifold to go off
1. Check the vacuum hoses to the solenoids on the engine.
2. Won't affect mileage.
3. No
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