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Old 08-07-2013, 18:20   #1 (permalink)
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Exclamation Misfire and exhaust egg smell

New to the forum and just installed an engine in 98 Vic body I purchased , from a 2000 police car and now exhaust smells like rotten eggs and misfiring at idle . Car never ran before engine change . Any ideas ?
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Old 08-07-2013, 18:33   #2 (permalink)
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Re: Misfire and exhaust egg smell

How long has the gas been sitting in the tank?
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Old 08-07-2013, 23:06   #3 (permalink)
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Re: Misfire and exhaust egg smell

That's a good ? I bought it 2 months ago . Just got around to getting used pi motor started in it this week . It had 78 miles of fuel in tank according to info center when I started it last night , about 3 gallons I guess . I drove 3 miles to Texaco this morning , put 10 gallons of premium in it to offset the low octane level in the 3 gallons and a jug of Heet to dry out the tank . Drove 3 miles back . Didn't make any diff so I pulled the injectors to install new orings in case I was getting multiple tiny vaccum leaks and plug coils . Do you know if all plug coils are the same even if last 2 letters of part number are different as I have 8 other plug coils for swap tests . I found one plug with a dark brown porcelan while all other 7 were almost white with greyish electrode . And I can hear my air ride pump come on in park but not in gear . Thanks for quick reply . Will continue saga in morning .
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Old 08-07-2013, 23:29   #4 (permalink)
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Re: Misfire and exhaust egg smell

That's a good ? I bought it 2 months ago . Just got around to getting used pi motor started in it this week . It had 78 miles of fuel in tank according to info center when I started it last night , about 3 gallons I guess . I drove 3 miles to Texaco this morning , put 10 gallons of premium in it to offset the low octane level in the 3 gallons and a jug of Heet to dry out the tank . Drove 3 miles back . Didn't make any diff so I pulled the injectors to install new orings in case I was getting multiple tiny vaccum leaks and plug coils . Do you know if all plug coils are the same even if last 2 letters of part number are different as I have 8 other plug coils for swap tests . I found one plug with a dark brown porcelan while all other 7 were almost white with greyish electrode . And I can hear my air ride pump come on in park but not in gear . Thanks for quick reply . Will continue saga in morning .
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Old 08-08-2013, 01:11   #5 (permalink)
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Re: Misfire and exhaust egg smell

Rotten egg smell is usually the cat , this explains .

Why does my car smell like rotten eggs? - Richmond DIY Auto Mechanic | Examiner.com
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Old 08-12-2013, 19:38   #6 (permalink)
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cool Re: Misfire and exhaust egg smell

Changed all 8 coils and put new orings on the injectors from donor motor , put it all back together and MEOW . So I don't know which one fixed it and I'm ok with that . Thanks for all the great help . I'm off to start a new thread to find out if I can pump up my rear airbags to level and install a valve to hold it there . Thanks again .......
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Old 08-13-2013, 12:00   #7 (permalink)
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Re: Misfire and exhaust egg smell

Good to hear one problem solved , thanks for updating the forum .
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Old 08-13-2013, 21:43   #8 (permalink)
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Re: Misfire and exhaust egg smell

Yeah ; One thing that erks me is reading a long winded thread and finding out the being that created it never let me know the outcome . I like keepin my threads clean . My first Vics a sweet ride . Just need the suspension and handling tightened up a bit . Thanks again .......
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Old 08-19-2013, 07:32   #9 (permalink)
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Re: Misfire and exhaust egg smell

personally i hate air ride... i would rather swap it out and install regular coils and shocks... air ride always develops issues and costs alot of money to repair... could hit scrap yards to find police parts for your car to make suspension better also... dont know why you installed a police motor... those engines may claim lower type miles but do not factor the idle time from how cops sit everywhere with engine running and not moving... idle time on cat convertors messes them up... good luck with your car and hope it performs for as long as you own it
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Old 08-20-2013, 03:44   #10 (permalink)
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Re: Misfire and exhaust egg smell

Quote:
Originally Posted by 87_Crown_Vic View Post
personally i hate air ride... i would rather swap it out and install regular coils and shocks... air ride always develops issues and costs alot of money to repair... could hit scrap yards to find police parts for your car to make suspension better also... dont know why you installed a police motor... those engines may claim lower type miles but do not factor the idle time from how cops sit everywhere with engine running and not moving... idle time on cat convertors messes them up... good luck with your car and hope it performs for as long as you own it
Good point, in the aircraft industry service time is expressed in hours, not miles. Postal vehicles go through brakes in a few hundred miles, if that, for the same reason.
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