Issues with my new car
05-06-21, 06:08 PM
#1
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Issues with my new car
Hey everyone. I just recently bought a 1990 rx7 STU and just had a few questions. I've always wanted a FC rx7 but never had the chance to buy one and an opportunity came up and a took it. I've never worked on a rotary before but I have a decent understanding of them. When I bought the car I was told that it sat at a transmission shop for awhile and they didn't want it anymore, it turns over but doesn't crank up and I don't know where to start looking for issues. If anyone has some advice or info they could give me it would be greatly appreciated.
~Thanks,
Caleb
~Thanks,
Caleb
05-12-21, 10:41 AM
#2
welcome to the board, Caleb. 
to get the engine to start, if it is cranking, but not firing, you'll want to start with the basics.
1. fuel
if it was down long enough for the fuel to start turning to varnish, then you'll want to go through the fuel system from tank to injectors. if not, then you might be able to get away with just cleaning the injectors, changing the filters and confirming the pump is working.
2. spark
confirm that you're getting spark at all 4 plugs and that timing is correct.
3. compression
for now, just get some oil into the chambers, then turn the engine by hand. if you're not getting six distinct pulses, it may be something, it may be nothing, but either way you'll need to look into why.
do you have any idea how long it was sitting for?
to get the engine to start, if it is cranking, but not firing, you'll want to start with the basics.
1. fuel
if it was down long enough for the fuel to start turning to varnish, then you'll want to go through the fuel system from tank to injectors. if not, then you might be able to get away with just cleaning the injectors, changing the filters and confirming the pump is working.
2. spark
confirm that you're getting spark at all 4 plugs and that timing is correct.
3. compression
for now, just get some oil into the chambers, then turn the engine by hand. if you're not getting six distinct pulses, it may be something, it may be nothing, but either way you'll need to look into why.
do you have any idea how long it was sitting for?
06-23-23, 06:44 AM
#3
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Join Date: Jun 2023
Location: Los Angeles
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It's always exciting to finally own the car you've been eyeing for a while. Now, I totally understand the concerns with it not cranking up. Working on rotaries can be a bit tricky, but with some patience and troubleshooting, you'll get it sorted.
First things first, I'd recommend checking the basics, like fuel, spark plugs, and battery connections. Those are common culprits for starting issues. If you're not comfortable diagnosing it yourself, consider reaching out to a rotary specialist or even the previous transmission shop for more info on its history.
By the way, I recently found a cool option for shipping cars called A1 Auto Transport Inc. They offer reliable transportation services if you ever need to transport a vehicle. Just thought I'd mention it in case it's helpful for you or others.
First things first, I'd recommend checking the basics, like fuel, spark plugs, and battery connections. Those are common culprits for starting issues. If you're not comfortable diagnosing it yourself, consider reaching out to a rotary specialist or even the previous transmission shop for more info on its history.
By the way, I recently found a cool option for shipping cars called A1 Auto Transport Inc. They offer reliable transportation services if you ever need to transport a vehicle. Just thought I'd mention it in case it's helpful for you or others.
Last edited by obrydebry30; 06-23-23 at 08:03 AM.
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