dapiper Posted August 5, 2007 Share Posted August 5, 2007 Its in the 90's here today and my Bosch 044 pump was cavitating. Noticed fuel starvation from lean condition. Could not run boost. Fuel gauge was oscillating around 2 psi, batt volts low and pump pulling over 20A. Pump hot as rail; over 100F. Tank warm. This monster is recirc so much it is absobing heat from rail and heating fuel? Anyone tried this pump? must be too much. Other one only pulled 8A. Pump sounded bad as it slowed and sped up surging. I have over 10 Gal in tank. Maybe Sunoco gave me fuel with high RVP? Prolly did some damage to pump. When will this end. Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted August 5, 2007 Share Posted August 5, 2007 How does your fuel filter look? Your tank could be full of crap and the pump could be having a hard time trying to pump all of it. I was running lean and the pump was going crazy when my inlet filter (fram G4) got full of crap. Mario Quote Link to comment Share on other sites More sharing options...
dapiper Posted August 5, 2007 Author Share Posted August 5, 2007 Yeah, checked filter and dropped sample from tank all looked OK, but will check again. Never had problems B4 in 20 years. Will requalify pump after cools overnight. Quote Link to comment Share on other sites More sharing options...
dapiper Posted August 6, 2007 Author Share Posted August 6, 2007 Requalified 044 pump at 23 GPH at 40 psig and 20A draw with surging sound. It's shot. Filled tank but flow remained same. Suspected dirt or water in fuel but drained and pulled tank but looked fine. ????????? Quote Link to comment Share on other sites More sharing options...
510six Posted August 7, 2007 Share Posted August 7, 2007 I am wondering if you got a hold of a fake Chinese Bosch 044 pump. My methanol injection system uses a "real"044 pump and uses only 3 gallons of methanol @ 7.5 amps which circulates the methanol automatically after 2000rpm and has withstood several 100+ degree days here in the semi- desert in California with no reliability problems. http://honda-tech.com/zerothread/1907305 Quote Link to comment Share on other sites More sharing options...
dapiper Posted August 13, 2007 Author Share Posted August 13, 2007 044 back in the saddle again; had water plug. Flushed with Ethanol now OK. Somehow water would not flush with gasoline, like the cyclonic action was separating the two and forced the water to collect in pump like a centrifuge. FYI, if your pump performance drops, suspect the dreaded water plug. Quote Link to comment Share on other sites More sharing options...
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