5 to 6 cranks to starts

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I just went out to start mine. I remembered to pump the pedal this time before starting. Pumped it twice and it fired up first crank.
 
Have you checked all of your earths? there are multiple around the engine bay. Also ensure your battery terminals are tight. It does sound like it might be electrical related.
 
petegangies said:
Have you checked all of your earths? there are multiple around the engine bay. Also ensure your battery terminals are tight. It does sound like it might be electrical related.
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Checked the terminals and all good. Will check the grounds tomorrow am. Good idea! Still doesn’t help me get to 1-2 cranks 🤣. One problem at a time I guess.
 
andcunning said:
Checked the terminals and all good. Will check the grounds tomorrow am. Good idea! Still doesn’t help me get to 1-2 cranks 🤣. One problem at a time I guess.
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I wouldnt stress too much.. mine cranks almost too fast now, especially when it's already warm.
 
andcunning said:
Sounds like a dream. That is my mission in life. 🤣
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haha, mine doesn't idle up when cold though, I've tried 3 different IACVs and a bunch of other stuff, but it refuses to do the 1200RPM idle when cold and first started. One day I might end up solving that mystery.. :hillbilly: thankfully it still idles perfectly fine.
 
andcunning said:
Whyso? This AM it almost died before firing up. Big voltage drop, and that worried me.
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You tried dumping the ECM ( resetting ) and cleaning the throttle body and IAC. And making sure the TPS is in its happy spot. Then staring the vehicle when the ambient temp is on the cold side of things and letting it warm up to operating temp ( when RPM drops below 800 ) and the coolant temp is around 180-190?
 
andcunning said:
Update. I ran the truck an hour yesterday after the fuel pump work I did with no issues aside from the new, very fast, 5-6 cranks. This AM, after sitting overnight, the truck cranked slower than the previous day and stuttered when starting and the lights on the dash died during the stutter. Luckily the truck started up during the stutter while all the lights went dead and everything came back to life. It started fine the 4 times I tried after. It did start with a super irregular crank count though. Right after it started in 3 very fast cranks. Then I shut it off and let it sit a minute and it started in 6 cranks that were slower. Then another minute and it started in 3 cranks that were fast.
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This sounds like a power supply problem.
Using a meter, what is the battery voltage across the terminals before the first start of the day?
 
jonheld said:
This sounds like a power supply problem.
Using a meter, what is the battery voltage across the terminals before the first start of the day?
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this,

& observe what the voltage drops to during the 1st start of the day

The dash lights dying during the start is a concern, possible alternator brush issue or as others have said bad grounding somewhere

Ive had my 80 since new (1 owner) and to be honest sometimes it fires up after only a couple of audible cranks, sometimes a few more. In the morning sometimes after 1 or 2, sometimes 3-4 or 5. As i mentioned previously my theory is where the piston is sitting in its stroke and possible unburnt fuel in there, who knows but it has always started

have your injectors ever been serviced?
 
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Battery voltage when off was 12.8V and while running was 14.3, so that all checks out. I think that leaves my starter. Will test while cranking and order a potential replacement.
 
jonheld said:
Was that before the first start of the day or after it ran??
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I ran it after sitting for 2 days and it only dropped a bolt while cranking. It warmed up today though. I think when it cranks very cold the starter acts funny. Going to replace it.
 
andcunning said:
Battery voltage when off was 12.8V and while running was 14.3, so that all checks out. I think that leaves my starter. Will test while cranking and order a potential replacement.
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Starter will likely not be the issue unless it seems labored during initial start up ( dead cold ) but honestly it’s not bad idea to knock that out of the equation if your unsure of age of starter. I’d check everything in that circuit whist your at it. Starting issues could be sooooo many things and also multiple things going on at once on older vehicles. I’d say mine starts around 2.5 secs when the ambient temp is lower than 60F maby 1.8< secs at 75+ ambient.
 
andcunning said:
Well, like the title says I’m chasing a long crank issue on my LX-450. It takes 5-6 cranks to start when cold, it takes 4-5 to start when warmed up… maybe 5-6. I know the pump doesn’t prime when the key is in the on position, but I tried it anyways a few time and every time I try priming the fuel pump it makes no difference.

I’ve done the following already:
New fuel pump
New PCV valve, lines, and gasket
New charcoal canister
New FPR valve (had a bit of fuel in the vacuum line of the old one)
New spark plugs
New distributor cap
New rotor
New air filter
Entire coolant system rebuild (all hoses, radiator, and coolant)
New Interstate battery
New battery leads

I have a fuel filter and some Bosch injectors if I have to replace them, but I don’t think the injectors are the issue since it runs so smoothly when driving.

Idles are smooth enough with little hiccups every minute or so but still very smooth. I can just feel a little change in. Pose for a split second.

When I start the car I do smell a bit of gas, but once it warms up I smell nothing.

I had fuel tank pressure issues before the charcoal canister replacement.

After the spark plugs it ran much smoother. The original plugs were very worn.

After the fuel pump replacement the cranks got MUCH faster. Almost double time if not a bit more. The faster cranks however are still around the same count.

The service history shows the PO had crank issues from time to time. He had the starter replaced 3 times. He had injectors replaced at 95k miles. I’m at 227k right now.

Anybody have any idea what I should do next?
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Are we talking 5-6 separate cranks on the ignition cylinder or 5-6 perceived revolutions of the crank?
 
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