Issues with My 22RE Cold Start Injector - Need Help!

Technical Discussions
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I’ve been having some trouble with my 22RE engine that I suspect is related to the cold start injector. When I first start the engine, it seems to struggle to stay idling for the first few minutes, and I’ve noticed some hesitation during acceleration. I’m wondering if anyone here has experience troubleshooting or replacing the cold start injector specifically for the 22RE.

What is the Cold Start Injector?

The cold start injector is a crucial component of the fuel injection system that helps the engine start cold by supplying extra fuel. This is especially important for older engines like the 22RE, which are common in many Toyota models from the 1980s and 1990s.

What I’ve Tried So Far:

  • Check for Codes: I scanned the engine for any trouble codes, but it came back clean.
  • Inspect Wiring: I took a look at the wiring harness connected to the injector, found no visible damage.
  • Fuel Filter: I replaced the fuel filter just to rule out any fuel delivery issues.

Questions:

  • Have you faced similar issues with your 22RE?
  • What are the signs that the cold start injector might be failing?
  • If I need to replace it, what’s the best source for a quality part?
  • Any tips on installation or troubleshooting this part?

Additional Information:

The engine is in a 1989 Toyota Pickup, and I’ve noticed these issues mainly in the colder months. Any insights would be greatly appreciated. Thanks!

2

Hey, I’m having similar issues with my 22RE! It struggles to start on cold mornings and the idle feels erratic. Have you checked your cold start injector?

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Definitely check your injector! It’s a common failure point. If it’s clogged, your engine could run rough and may even stall.

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I replaced mine last winter and what a difference! It used to start hard, now it purrs. I’d recommend it! Just make sure to clean out any old fuel residue.

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I hear you, space! I fought with mine for months. It’s definitely worth checking the injector wiring as well—corrosion can cause intermittent issues.

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6

Sometimes I feel like my truck has a mind of its own! One day it starts great, next day I’m cranking endlessly. Anyone else experience that?

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Totally relatable, tking! It’s like my truck knows when it’s freezing outside. I found that adding some fresh fuel helps it turn over much easier.

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I once had rough idling right before it wouldn’t start at all! Turned out it was a clogged injector. Have you checked the fuel filter too?

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Great point! A fuel filter can cause pressure issues. Have you experienced any symptoms like stalling after starting?

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Stalling? Oh yes, that’s my daily struggle! It suddenly cuts out when idling. I’m beginning to think it’s time for a full inspection.

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Hey csmith, I felt that! It’s tricky but I think it could help to clean the throttle body as well—sometimes that can cause stalling issues.

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I was going to call my truck ‘Old Faithful’ but at this rate it’s more like ‘Old Unreliable’! Anyone else feeling my pain?

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Haha, love it! If only our trucks could talk… I’m hopeful you can get it sorted out. Have you already tried a new injector?

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Hey! To replace your cold start injector, you’ll need a few tools: a socket set, screwdriver, and pliers. Safety first! Make sure to disconnect the battery to avoid any electrical issues. Good luck!

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Awesome! Should I also have any gaskets or sealants ready for this process?

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Yes, definitely! You’ll want to have new O-rings or gaskets on hand. They can wear down over time and cause leaks, which you definitely want to avoid after replacement!

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Don’t forget to label your fuel lines before you disconnect anything. It will save time and headache during reinstallation. Trust me on this one!

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Good suggestion! Any tips for safely removing the old injector?

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When removing the old injector, be gentle but firm. Sometimes they can stick. A little wiggle might help. Also, clean the injector port before installing the new one for a snug fit!

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I heard it’s important to do a leak test after installation. Can someone elaborate on that? Seems tedious but necessary.