Cliff's Quadrajet Parts and Rebuild Kits
Quadrajet Problem Solving => Diagnose a Quadrajet carburetor problem => Topic started by: rozicrc on July 05, 2017, 07:59:28 PM
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Hello
I have a 19083522 on a mercruiser I have been struggling with for a couple of years now. It runs like a raped ape when over 1000 rpm with float level at 3/8 per the Merc manual, 1/4 gets a lot of dripping from the stern primary. I have replaced kit cheap rebuild kit with a cliff kit, but have the same issue I originally had. I have 5.5 fuel pressure when cranking, have replaced the fuel pump, vacuum checked the needle and seat as well as pressure checked with no leak until 7 psi. I only have the idle screws out to 2 turns and adjusted to where the engine is at max rpm plus 1/2 turn. The boat does sit stern low in the water as I added a swim platform. I can make a wedge up from a spacer I have, but am trying to avoid it. I have read that running lean can cause primary drip. What should I be trying to do here as this is getting painful when trolling? Thanks in advance for your replies
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Did you remove the idle tubes and clean them during the rebuild?
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Yes I did clean completely . I adjusted the idle to high I believe based on posts here and was too lean. . Since posting I have adjusted 3/4 turn richer and successfully slowed down the idle. Unfortunately I have a rod knock now on 2 or 3. I checked the o and smell gas in it. Think I killed my motor with 30 hours on it, pulling it now. Suck is life!
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The flywheel came loose motor is fine. Belleville washers are in my future. And yes I checked the flywheel for cracks and the harmonic balancer for damage