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I've got an '86 Spider that was running fine now it won't start, it's not getting fuel. I took the fuel line off at the filter to see if fuel was getting through and it was. I put the line back on and it started. Next day it wouldn't start again. Took the line off at the fuel rail and it had good flow. Put line back on and it started. Next day it won't start, no fuel. Any ideas? Is there a possible vapor lock? Thanks for any help.
 

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But Mad North-Northwest
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It's generally pretty hard to vapor lock fuel injected cars. I mean, it can happen, but it's unlikely because unlike with carbs there's a return line and a lot of fuel flow.

I'd start by making sure your in-tank booster pump is working. Do a search: there are several threads on how to check this.
 

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I've got an '86 Spider that was running fine now it won't start, it's not getting fuel. I took the fuel line off at the filter to see if fuel was getting through and it was. I put the line back on and it started. Next day it wouldn't start again. Took the line off at the fuel rail and it had good flow. Put line back on and it started. Next day it won't start, no fuel. Any ideas? Is there a possible vapor lock? Thanks for any help.

When I had a similar off/on issue with not having spark, it ended up being a bad flywheel sensor. There are two sensors mounted on the bellhousing. One is for fuel and the other for spark. I believe the upper of the two is fuel. The next time it doesn't want to start, I would disconnect the sensor at the harness and test it per the instructions in this document.

http://www.alfabb.com/bb/forums/561722-post4.html
 

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Discussion Starter #4
Went out this morning and it started right up. A few hours later and same thing. Checked both sensors and both are good, in tank fuel sender checked, fuel pump checked, disconnected fuel line at fuel rail and there is fuel getting to that point. Any other suggestions?
 

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I think I found the problem. A small vacuum hose on the bottom of the plenum for the manifold pressure sensor came off. Started up after reattaching.
 

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Went out this morning and it started right up. A few hours later and same thing. Checked both sensors and both are good, in tank fuel sender checked, fuel pump checked, disconnected fuel line at fuel rail and there is fuel getting to that point. Any other suggestions?
Perhaps pull out, check, clean and reinstall the two relays and inline fuse under the parcel tray. The work together to supply power to the pumps. You want to make sure the cause of having no fuel is because of a bad contact in one of those??

I can't see what removing the fuel line would do and wonder if its just coincidence. The next time it won't start, without touching that fuel line, go and listen for the click under the parcel tray and humming of the in-tank and under car pump while somebody turns the key to the "on" position.
 
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