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'88 5kcstq no start update II
I looked at my '88 5kcstq again, this time looking more closely for
vacuum leaks and checking engine grounds.
I tightened many of the hose clamps which were looser than I
would have them be. I noticed that the rubber boot/hose/manifold
that sits on the valve cover and connects some pipes, including
one that goes down the side of the engine, was completely
severed. I tried to hold it in place while cranking, and it didn't seem
to have an effect.
Also, I only found two grounds from the motor to the chassis. One
was a loosely insulated, braided copper strap from the back of the
valve cover to the firewall, held by the bolt that bolts the stamped
metal bracket to the wall that holds three terminal connectors. I
did my best to clean it off and tighten down the nuts. It wasn't dirty
or corroded, and the bracket nut was not loose, but I did tighten it
The second ground I saw consisted of two small gauge brown
wires, both terminating in the same ring terminal, which was bolted
to the top of the intake manifold. I cleaned and tightened that one
What I did not see was any other significant engine grounds. It
seems like there should be more.
I didn't delve too deeply into the rest of the vacuum/intake system.
I need to get dirtier, and start ripping parts off to really inspect
things. I was thinking I should go ahead and order the rubber piece
I need, but then again, to save on shipping and hassle, maybe I
should wait until I look at more things before I place an order.
In summary, I have an '88 5kcstq, 160k, rebuilt 30k ago. It once
ran well, until I started it in gear and it lurched. After that, it either
won't start, or it will die after starting. There are no error codes or
blown fuses (including the "spare" ecu fuse), and I've replaced the
fuel pump and the fuel filter under the hood (is there another?). I
put in new plugs and checked for spark, and the person under the
hood said there was spark (and commented on how neat the
sparks picked a different eletrode out of the three each time, so I
trust that there was spark). The car just cranks.
I think I need to: 1. check for more vacuum leaks. 3. check for
more engine grounds? 2. jump the fuel pump relay (to close the
circuit and make the pump pump) 3. somehow check for fuel
delivery to the cylinders
Sound like a plan? Anyone want to fly or drive out to Gilbert, AZ to
take a look? I can spring for a ticket if so, depending...
Thanks for the help,