Has spark & fuel but no start
#1
12-30-2018
Join Date: Dec 2018
Location: Turner valley,Alberta
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Has spark & fuel but no start
Have changed out pcm & egr. Unit has spark & fuel & cranks over fine but won’t start . New pcm from rock auto that is suspose to be flashed already . Installed new distributor cap & rotor button . Tried everything I could think off & help would be helpful thanks
#2
12-30-2018
Welcome to the forum
Do 50/50 test
Spray gasoline or starting fluid into the intake and try to start engine
If it starts and dies then you have a fuel problem
If it doesn't start then its a spark problem
50/50, easy peasy
Spark is not spark unless it is at the right time
Fuel is not fuel unless it is IN the cylinder with some air
Its fine to use a spark tester or test for fuel pressure, but ultimately its a waste of time until you do the 50/50 test
The 3rd thing an engine needs is COMPRESSION, can't start without it
If 50/50 doesn't get engine to start, it is probably getting spark at the wrong time but.........................it could be lack of compression, so quick test of a couple of cylinders could be done, you need at least 120psi of compression to get gasoline to ignite with a spark
Do 50/50 test
Spray gasoline or starting fluid into the intake and try to start engine
If it starts and dies then you have a fuel problem
If it doesn't start then its a spark problem
50/50, easy peasy
Spark is not spark unless it is at the right time
Fuel is not fuel unless it is IN the cylinder with some air
Its fine to use a spark tester or test for fuel pressure, but ultimately its a waste of time until you do the 50/50 test
The 3rd thing an engine needs is COMPRESSION, can't start without it
If 50/50 doesn't get engine to start, it is probably getting spark at the wrong time but.........................it could be lack of compression, so quick test of a couple of cylinders could be done, you need at least 120psi of compression to get gasoline to ignite with a spark
Thread
Thread Starter
Forum
Replies
Last Post
nicholaswebber13
2.3L & 2.5L I4 Tech
8
07-05-2019 06:35 PM
