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Gary
Gary, Chevy Technician
Category: RV
Satisfied Customers: 16662
Experience:  15 years GM master tech
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Winnebago vectra: I Have a 1993 winnebago vectra Have done

Customer Question

I Have a 1993 winnebago vectra Have done a full tune up. New prom and ecm also still no start. it cranks I have fuel and spark as well as comp. Im Stuck
Submitted: 2 years ago.
Category: RV
Expert:  Tims Auto Repair replied 2 years ago.
Hi,My name is Tim,
I will do my best to assist you
tell me,,will it start with a prime?if you use starting fluid or pour a little fuel into the throttle body?
does fuel come out of the two injectors when the starter is turning the engine?
tell me all you can
thanks
Customer: replied 2 years ago.
Tried the prime still nothing. and I do have fuel in th injectors when cranking
Customer: replied 2 years ago.
I am an ASE mechanic of 33 years never come across something like this
Expert:  Tims Auto Repair replied 2 years ago.
ok
if you have a spark at the plug wires.it has compression and is in fact getting fuel..it is out of time on the distributor..if notit would have to fire up..
the distributor gear may be stripped.
you need to check the ignition timing
thanks
Customer: replied 2 years ago.
Pulled the dist. and checked for tdc getting spark. Got fuel to injectors good compression
Expert:  Tims Auto Repair replied 2 years ago.
that bdoesnt make any sense..
please stand by,,i will opt out,,perhaps one of the other guys has a clue..
someone will be right with you
thanks
Expert:  Gary replied 2 years ago.
when cranking it over you visually see fuel pulse out of the fuel injectors ?
what was the compression ?
Customer: replied 2 years ago.
Yes I can see fuel pulsing Getting between 130 and 140
Expert:  Gary replied 2 years ago.
ok and to just be sure you have over 130 PSI all 8 cylinders compression and confirmed spark at the plug wires where they connect to the spark plugs ?
and the spark plugs new ?
is all of that correct ?
was this just fueled up with gas ?
has this been sitting for a long time ?
Customer: replied 2 years ago.
About 4 months had a hard time starting it to bring to my shop but ran fairly well coming over ..changed plugs wires cap rotor coil ignt. module
Expert:  Gary replied 2 years ago.
just be sure you have over 130 PSI all 8 cylinders compression and confirmed spark at the plug wires where they connect to the spark plugs ?
and the spark plugs new ?
is all of that correct ?
the engine up on TDC the rotor is point at where the # ***** spark plug wire tower is on the cap ?
cranking it over the rotor is turning ?
Customer: replied 2 years ago.
Pulled the dist. to make sure it wasnt stipped.. That was the first thought.Do have spark. with wire and plug out cranking spark and compression at the same time.
Expert:  Gary replied 2 years ago.
as long as the firing order is correct and the distributor is in correctly is all i was making sure of
if that checks out fine then at this point the only thing left is contaminated or water in the fuel
pull off the fuel feed line at the throttle body and in a glass container crank the engine over and get a good fuel sample
then let it sit for 15 minutes
do you see any separation gas floats on top of water
and also does it smell bad ? look dark ? a lot of sediment in it ?
Customer: replied 2 years ago.
Im going to pull the dist one more time. cant Imagine it out of time since it ran over here.
Expert:  Gary replied 2 years ago.
just make sure it is in correct
if it is take a fuel sample next
it just need spark and fuel and compression to run
you have good compression and fuel ( we need to know if the fuel is good )
and it has spark ( just have to be 100 % sure the distributor is in correctly and the firing order is correct on the cap to the correct cylinders )
Customer: replied 2 years ago.
checked the timing again and OK got a fuel sample no water but dis colored does smell different.
Expert:  Gary replied 2 years ago.
at point i would clean the spark plugs try some new fuel
its just odd to have spark and fuel and compression and the engine not run
that is all this engine needs to run
Customer: replied 2 years ago.
I agree hope to test the fuel later today
Expert:  Gary replied 2 years ago.
if it still does not run try a new ignition coil
maybe our spark is not good enough to fire the plugs
Customer: replied 2 years ago.
Ive change the coil, ignition mod. got good spark. this dog on thing is not making me happy
Expert:  Gary replied 2 years ago.
ok
at this point we have to rule out fuel
Customer: replied 2 years ago.
pulled fuel from the tank and it stinks pretty bad but it will ignite but with a flame still have to see if it will light with just a spark. checking for injector pulse now it sprays fuel but like you said if the fuel is bad no JOY
Expert:  Gary replied 2 years ago.
ok let me know