1988 325is no start. PLEASE HELP!

[jlevie]

You still don't know if you have a fuel problem. The first action in determining if that is the case is to measure the rail pressure when cranking the engine.

[jlevie]

You still don't know if you have a fuel problem. Get a gauge and measure rail pressure while cranking the engine.

Stop throwing parts at the problem while hoping for a favorable outcome. Do the necessary diagnostics.

[E30NJ]

Does it even crank over? Can you hear it trying to start?

[smurphy_e30]

Well I installed the fuel filter and replaced the fuel pump strainer sock and it started right up, I also cleaned the spark plugs. I'm not sure why just doing those simple things did the trick though. Thanks for the help everyone!


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[matthugie]

Well I installed the fuel filter and replaced the fuel pump strainer sock and it started right up, I also cleaned the spark plugs. I'm not sure why just doing those simple things did the trick though. Thanks for the help everyone!


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Because a clogged filter and/or strainer sock won't allow enough fuel flow to run the engine. Now would be a good time to check your tank for rust as well. You can use a mirror and look into the tank, or, if you still have the sock, let it dry out then tap it on a paper towel. If rust colored stuff comes out, you likely will need a new tank. Someone also has a write-up on how to clean rust out in the DIY section, but I think I remember that it wasn't easy.

[smurphy_e30]

Because a clogged filter and/or strainer sock won't allow enough fuel flow to run the engine. Now would be a good time to check your tank for rust as well. You can use a mirror and look into the tank, or, if you still have the sock, let it dry out then tap it on a paper towel. If rust colored stuff comes out, you likely will need a new tank. Someone also has a write-up on how to clean rust out in the DIY section, but I think I remember that it wasn't easy.

I checked the tank already, doesn't look like there is any rust. I think I got lucky.


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[jlevie]

Looking in the tank usually won't tell it it is rusty. Use a penlight to see and stir the bottom of the tank with a stick. If there is rust sediment you will see and feel it.