Volvo AWD 850 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 12/2007 850 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

car cranks but does not start, massive backfire 850 1994

posted by  riverbend on  Fri Jun 19 15:15 CST 2009
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Oct 22 15:29 CST 2014
[RELATED]

Madeline's 850 cranks but does not start. I unplugged the air mass flow sensor. After about 10 seconds of cranking it produced a massive backfire. Smoke came out all all sorts of places and did loosen the oil filler cap. Impressive.

The fuel pressure regulator vacuum line did smell like fuel, but with a backfire like that, it would not surprise me that fuel vapor was everywhere. Fuel pressure looked good (~44 psi and held 40psi for a couple minutes. 20 psi for quite a while.)

How do I check the camshaft position and crankshaft position sensors ?

Any other ideas ?

Thanks

Greg





THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New car cranks but does not start, massive backfire [850][1994]
posted by  riverbend subscriber  on Fri Jun 19 15:15 CST 2009 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.