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in praise of the "Italian tune-up' 200

I just put my 1984 245ti back on the road after a period of storage. Cold it would start up fine but then be balky on hot restart - run with a lumpy idle but drive ok. I couldn't wait to do any diagnosis - a trip to Winston-Salem to see our 13 year old grandaughter in a school opera meant getting on the road. It behaved that way all the way down (that is-going from north to south) and continued when I went to Charlotte to visit the Pullapart there (4 240's in stock). I suspected clogged injectors so my son - a Mini-Cooper tech - tried to do an injector cleaning before I went to Charlotte but someone had messed with the kit's pressure regulator and it dumped the entire mixture in seconds--should have run the car for 20 minutes or so. It all blew out the exhaust when I restarted on the gas in the car's tank--no change in the condition.
On the return to W-S there a good long grade and mostly out of frustration I just let it rip -- got right up to 5000rpm+ (about a 100mph) and held it there till the crest. Shorty thereafter I made an exit from the highway. At the bottom of the ramp it idled perfectly--just like it used to do--and has been perfect ever since.
My Danish Volvo tech friend told me after service they used to run cars (544,122&140 models) in 3rd gear, foot to the floor for 8 miles on a highway--turn around and do the same on the return except for shifting to 4th the last mile or so-with the car gaining another 8 or 9 mph over its "over the top" top in 3rd. Call me a "believer". -- Dave








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    in praise of the "Italian tune-up' 200

    My dad, who babies his cars, 10 minutes warm up, idle out of the neighborhood and never hard accelerations, was always told, "You gotta get out there and burn the gunk out". Maybe in your case, the injectors needed to have a hard flow of gas clean off the slight tarnish..
    I'm a full believer of a small 'IV' drip of water in the intake on High mileage cars. I have felt teh cars improvement and have seen the crap that come out of the exhaust when doing that.
    --
    '75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me http://home.lyse.net/brox/TonyPage4.html http://cleanflametrap.com/tony/








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    in praise of the "Italian tune-up' 200

    Hi Dave

    Maybe I should try that... Though my problem is just the opposite as yours on my 245 TIC .. Lump when there's a cold start but within a few minutes at idle smoothes out and runs fine.. Still chasing this problem.... Any thoughts....

    Thanks in advance








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      in praise of the "Italian tune-up' 200

      A stuck in the warmed up closed position Auxiliary air valve will create an overly rich mixture during warm-up--maybe your problem? -- Dave








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        in praise of the "Italian tune-up' 200

        You know come to think of it I do smell richness in the exhaust when I first start up... Can this be cleaned up with some injector cleaner....








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          in praise of the "Italian tune-up' 200

          Plus where is this located on a B21FT ...... Disregard the last post...








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            rich on cold start 200

            Offhand, it sounds like a dripping injector or two. But k-jet is all so much guessing without either using a pressure gauge or sticking the injectors in some empty water bottles and testing.

            The AAV or "air slide" didn't make it to the B21FT. I recommended same to someone (asked by email) a week or so ago, and when he asked me "where it was" it dawned on me I was thinking of my B21F car, where it mounts to the cam cover right up top. The function of it was replaced by another CIS, (Constant Idle System) an electronic idle speed feedback controller, introduced in '81 and used with all the B21FT motors.
            --
            Art Benstein near Baltimore

            A man and his ever-nagging wife went on vacation in Jerusalem . While they were there, the wife passed away. The undertaker told the husband, "You can have her buried here in the Holy Land for $150 or we can have her shipped back home for $5000. The husband thought about it and told the undertaker he would have her shipped back home. The undertaker asked him, "why would you spend $5000 to have her shipped home when you could have a beautiful burial here, and it would only cost $150????" The husband replied, "Long ago, a man died here, was buried here, and three days later, rose from the dead. I Just can't take that chance".








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              rich on cold start 200

              Of course Art is correct about the "location" of the air slide--much to my embarrassment. Yesterday I opened the hood on the '84 so I could describe the location--and then realized it did not have one - and the idle control motor is well hidden under the intake manifold---and then I couldn't remember where the post was that I was responding to. I guess the idle was never an issue with the '83 242 turbo my wife drove for a few years because I never realized it had an idle motor and not an air slide. Thanks for the correction. -- Dave








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                rich on cold start 200

                Dave, this is just exactly what I did a week or two ago. Let's share the embarrassment while I'm honored to.
                --
                Art Benstein near Baltimore

                "My parents didn't want to move to Florida, but they turned sixty and that's the law." (Jerry Seinfeld)








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              rich on cold start 200

              Hi Art... Yep the B21FT is a CIS and I'm leaning toward a leak injector also... Looks like it's time to take it to my buddy shop for a pressure test... I've replaces the AAV on my sons B21F and made a world of a difference in his 80 GT.. Happy Thanksgiving to all...








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    in praise of the "Italian tune-up' 200

    I overheard my mom telling her sister the mechanic said her car just needed to be taken out up on the interstate and "get the carbon blown out of it." I was 15 then, and the idea made sense to me. Took good care of Mom's car for at least a year after that. :)
    --
    Art Benstein near Baltimore

    Two Innuit people sitting in a kayak were chilly, but when they lit a fire in the craft, it sank, proving once again that you can't have your kayak and heat it, too.








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      in praise of the "Italian tune-up' 200

      Yeah, when I got my license in 1964 my mom was driving a '57 Chrysler 354 hemi w/4 bbl and dual exhaust. It got the carbon blown out on a regular basis :) Mom was a leadfoot too. -- Dave








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        in praise of the "Italian tune-up' 200

        My 1974 144 regularly sees 4-5krpms when driven by my mom. She's been driving that way on the same car for the past 40 yrs....last overhaul i did 8 yrs ago - no carbon deposits...
        --
        1974 144GL, 1996 940 GL LPT







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