I just finished doing a compression test (180 across all 4 cylinders) and the car now will not start. I pulled the ECU fuse which is located in the engine bay so I wouldn't get fuel when I checked compression. The car turns over but refuses to start. I am throwing no codes and the ecu fuse in which I pulled looks good. Any ideas. Please help.

 

when you did the compression test did you unplug the distributor plugs?

 

No I didn't.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.Death &raquo;</TD></TR><TR><TD CLASS="quote">No I didn't.</TD></TR></TABLE>

uh-oh..

all i can tell you is replace the rotor and see what happens..

 

What do you mean uh oh. What leads you to believe the rotor is to blame.

Thanks....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.Death &raquo;</TD></TR><TR><TD CLASS="quote">What do you mean uh oh. What leads you to believe the rotor is to blame.

Thanks....</TD></TR></TABLE>

just from experience..when i first did a compresion test i didnt unplug the dizzy plugs and it didnt start up..i was confused ..my father asked if i unpluged those plugs i said no,,so he called me an idiot and we went to autozone bought a new rotor ,put it in and it started up..i got lucky..

 

Off to Autozone I go.

Thanks.

 

When you crank over the engine without the spark plugs/ wires grounded you fry the coil. The coil needs to release the charge/spark. What happens is the coil builds up too much and sizzle, see ya!

If you would look at the rotor you would probably see the burnt marks in the dist.

 

I pulled the fuse for the ECU. Wouldn't this render the coil inactive??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.Death &raquo;</TD></TR><TR><TD CLASS="quote">I pulled the fuse for the ECU. Wouldn't this render the coil inactive??</TD></TR></TABLE>

Yes.

Before throwing parts at it, try checking for spark and fuel. That will at least let you know if you're on the right track.

 

Alright I checked for spark, there was none so I took apart the dizzy and replaced the coil with and presto. We have ignition!!!!!!!!!! A lesson learned, whenever doing a compression test ALWAYS unplug the dizzy. Thanks for the replies.


Rick....

 

good to hear..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.speaker &raquo;</TD></TR><TR><TD CLASS="quote">good to hear.. </TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.speaker &raquo;</TD></TR><TR><TD CLASS="quote">when you did the compression test did you unplug the distributor plugs?</TD></TR></TABLE>back form the dead!!! mr. speaker what "plugs" are you reffering too? the harness plugs(that attatch to the dizzy) or do you mean pull the spark plug wires of the dizzy cap?

 

The two dizzy plugs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mar778c &raquo;</TD></TR><TR><TD CLASS="quote">The two dizzy plugs.</TD></TR></TABLE> ok see i didnt know that....im glad i searched 1st thanks