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carlozzz Samba Member
Joined: June 26, 2012 Posts: 6 Location: Estonia
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Posted: Tue Jun 26, 2012 5:37 am Post subject: VW T2 1976 2.0 FI engine problems (flooding) |
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Hi! I'm new in this forum and knowledge of vw aircooled engines is very small. My bus is already painted but after fixing the oil leakage, my bus developed some problems. Before it started quite good, but struggled sometimes at idle. But now the engine floods and doesn't start with fuel pump on. When i disconnect the fuel pump, the engine starts and i can drive with bus. (injectors leaking???)
At the beginning i had high pressure mercedes pump on bus, i thought this was the problem, so i change it to original vw t2 pump, but that didn't work. I got 3-5bar pressure electric pump on right now and also i changed fuel pressure regulator(that was used, not sure it was working at all). Can you help me diagnose the problem, i'm out of ideas. |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51156 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Tue Jun 26, 2012 7:48 am Post subject: |
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Welcome!
What happens when you ground the wire leading to the temp sensor 2 on the LH head near cylinder #3?, do you have a spare TS2? _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
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Слава Україні! |
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aeromech Samba Member
Joined: January 24, 2006 Posts: 16971 Location: San Diego, California
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Posted: Tue Jun 26, 2012 9:16 am Post subject: |
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There's a port on the fuel rail with a small plug in it. You take out the plug and install a hose going to a gauge. Then crank the bus and watch the gauge. Your fuel pressure should be in the 30-40 psi range while cranking. Once the engine starts the fuel pressure should drop into the 28 psi range. Too high or too low is bad. _________________ Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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WhirledTraveller Samba Member
Joined: January 09, 2008 Posts: 1399 Location: Cambridge, MA
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Posted: Tue Jun 26, 2012 1:46 pm Post subject: |
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My bus had a flooding issue once due to a bad TS2 sensor as Busdaddy is alluding to. Pretty common failure.
But you also need to correct VW fuel pump and fuel pressure regulator on there both working properly putting out the correct pressure. It's never ever going to run correctly with a 5psi pump meant for a carburetor. _________________ 1977 Westy, Automatic. Big Valve heads, CS Cam. |
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carlozzz Samba Member
Joined: June 26, 2012 Posts: 6 Location: Estonia
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Posted: Wed Jun 27, 2012 9:34 am Post subject: |
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The temperature sensor 2 was broken off, so thanks guys i think this will solve the problem, but now my freshly painted door fell off( so pissed), so i have to repaint it. One problem solved, the new one comes( Murphy's laws i think). |
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