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Engine Wont Start Help?!?!?


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#1 Zeusimo

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Posted 10 September 2010 - 12:00 PM

I Just Bought A 620 And Wont Start
Im New To Datsun Engines And Have No Idea Where Anything Is

Starter Cranks Just Fine
Just Checked For Spark It's Good
Only Thing I Can Think Of Is Bad Relay Or Fuse
I'm Just Stupid 18yo Kid,
WITH A DATSUN!!!

#2 datto510

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Posted 10 September 2010 - 12:03 PM

No relay, its mechanical and driven from the cam.
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#3 INDY510

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Posted 10 September 2010 - 12:08 PM

Spray some starter fluid in the carb while cranking it over.....


If it doesn't even sputter,,, ,, then you don't have spark.. (or the proper firing order)



Has it ever ran when you owned it?....... ... when you say "it has spark" ..... what did you check?

#4 Zeusimo

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Posted 10 September 2010 - 12:32 PM

It Ran When I Bought It Drove It From Fresno To Modesto (The Little Engine Can RUN!Posted Image) Parked It On My Driveway And Next Morning Wouldn't Start
I Pulled The Spark Plug Out And Touched It To The Head And Tried Turning It On And There Was Spark
I'm Just Stupid 18yo Kid,
WITH A DATSUN!!!

#5 Laecaon

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Posted 10 September 2010 - 01:00 PM

Sounds like a fuel problem if there is actually sufficient spark. An engine really only need spark, fuel, and air to run.

Check to see if you have fuel to the engine. The starter fluid check would also tell you if its a fuel problem.
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#6 datsunaholic

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Posted 10 September 2010 - 01:08 PM

A '78 MIGHT have an electrical pump (they had electric pumps if they had A/C), but there's still no relay. Pull hose off at carb and crank, you'll know if there's fuel then.
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Well, at least he gets 24 hours notice. That's more than most of us get. All most of us get is, "Mind that bus!" "What bus?" _splat_!

#7 datto510

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Posted 10 September 2010 - 01:23 PM

A '78 MIGHT have an electrical pump (they had electric pumps if they had A/C), but there's still no relay. Pull hose off at carb and crank, you'll know if there's fuel then.



:blush:

Oh well, learn something everyday!
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#8 Zeusimo

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Posted 10 September 2010 - 01:32 PM

FIXED

My 620 Does Have A/C
I Looked For The Fuel Pump And It Has An Aftermarket Universal Electric Pump Without A Filter (I Will Buy A Proper One Eventually)
I Just Cleaned The Carb And Added ALOT Of Stating Fluid And Started After Maybe 10 Seconds (Found 2 Loose Screws)
It Runs Fine NowPosted Image

THANKS!Posted Image
I'm Just Stupid 18yo Kid,
WITH A DATSUN!!!