Mazda3 2.3L cranks but doesn't start with no codes

30

Asked by Arnold Sep 13, 2020 at 02:27 AM about the 2007 Mazda MAZDA3 s Grand Touring

Question type: Maintenance & Repair


Ok smart techs here's one that's not normally
asked being a first time Mazda owner I really loved
the car inside out and had plans for custom word
100% 2007 Mazda 3 2.3L 2 months ago I I put
4&1/2 quarts of oil cuz I misread dio stick & blue
white smoke I immediately drained and replaced
valve cover gasket then I had to do timing chain.
Sooo i figured bcuz outa work from pandemic I
mites well do engine haul over so I bout new
pistons,rings the entire works only internal and did it
by the book after 1& 1/2 months waiting for parts
and hands on full time it started but it idled really
rough i had like 5 codes fixed them and nothing
changed on the idle but codes were gone. The only
thing I did change that's new is the chain tensioner
the chains and sprockets still looked good I
repeated all the steps a second round everything.
Now it cranks but doesnt start and i already spent
the same amount as an engine swap. VERY
FRUSTRATING AND STRESSFUL i tested
resistance and DC on all sensors IDK please help I
would appreciate any support I get cuz now I'm lost
and wishing I never bought "Dust Buster" Thanks
everyone for future replies.
Reply Quote

Adog7
Adog7
Registered
Joined 46 m ago · 1 Posts
Discussion Starter • #2 • a moment ago
Adog7 said:
Ok smart techs here's one that's not normally
asked being a first time Mazda owner I really loved
the car inside out and had plans for custom word
100% 2007 Mazda 3 2.3L 2 months ago I I put
4&1/2 quarts of oil cuz I misread dio stick & blue
white smoke I immediately drained and replaced
valve cover gasket then I had to do timing chain.
Sooo i figured bcuz outa work from pandemic I
mites well do engine haul over so I bout new
pistons,rings the entire works only internal and did it
by the book after 1& 1/2 months waiting for parts
and hands on full time it started but it idled really
rough i had like 5 codes fixed them and nothing
changed on the idle but codes were gone. The only
thing I did change that's new is the chain tensioner
the chains and sprockets still looked good I
repeated all the steps a second round everything.
Now it cranks but doesnt start and i already spent
the same amount as an engine swap. VERY
FRUSTRATING AND STRESSFUL i tested
resistance and DC on all sensors IDK please help I
would appreciate any support I get cuz now I'm lost
and wishing I never bought "Dust Buster" Thanks
everyone for future replies.
This is a list of new parts I installed.
Piston rings Hastings
Rod bearings and assembly lube
Pcv valve & breather hose
Head block surface and cleaned
New 16 valves & valve compound with leak down
test
All around new gaskets
New chain tensioner
Air filter and oil filter

2 Answers

The picture of the head is clear the intake valves are all bent. Timing issue piston meet valve!!

I did the same thing motor fired but wouldn't keep running these engines don't forgive timing mistakes.

Your Answer:

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