COASTLINE FIX

The Coastline Fix Blog

Mobile eBike repair guides, Rad Power Bike know-how, and maintenance tips from a North County San Diego mechanic.

How to Fix a Flat Tire on Your Rad Power Bike (Without Damaging the Motor)

Flats are the #1 reason we get called out. Here's exactly how to handle one yourself - and when to call a mobile mechanic instead.

Repair Guides6 min read

eBike Battery Care: 7 Habits That Double Your Battery's Lifespan

Your eBike battery is the most expensive component on your bike. These small habits can literally double how long it lasts.

Maintenance5 min read

Mobile eBike Repair vs. Bike Shop: Which Is Right for You?

Most eBikes are too heavy and awkward to load into a car. Here's how to decide whether mobile or shop service is the better call.

Buyer's Guide4 min read

eBike Brake Pads: When to Replace Them (And Why It Matters More on an eBike)

eBikes are heavier and faster - your brakes work twice as hard. Here's how to spot worn pads before they fail.

Maintenance5 min read

The 12-Point eBike Tune-Up Checklist (What a Real Tune-Up Includes)

Not all tune-ups are equal. Here's the 12-point checklist we run on every eBike - and what most shops skip.

Maintenance6 min read

Super 73 Common Problems (And How to Fix Them)

Super 73s are a blast to ride and a magnet for the same handful of issues. Here's what to watch for.

Repair Guides6 min read

Weird eBike Motor Noises Explained (Clicking, Grinding, Whining)

A new noise from your motor is the cheapest warning you'll ever get. Here's what each sound usually means.

Diagnostics5 min read

Best eBikes for Carlsbad Hills and Coastal Riding (2026 Guide)

Not every eBike is built for the coast. Here's what holds up - and what doesn't - based on what we actually repair.

Buyer's Guide6 min read

eBike Chain Lube: Wet vs. Dry vs. Wax (And What to Use in Coastal San Diego)

eBike chains take 2–3x the load of a regular bike chain. The wrong lube cuts their lifespan in half.

Maintenance4 min read

eBike Winter Storage in San Diego: Yes, You Still Need to Prep It

We don't get snow, but coastal humidity and rare cold snaps still wreck eBikes left sitting. Here's how to prep yours.

Maintenance4 min read

How to Prevent eBike Flats (5 Things That Actually Work)

Flats are the #1 reason we get called out. Here's how to stop them happening in the first place.

Maintenance5 min read

eBike vs. Regular Bike for Commuting in North County San Diego

If you're thinking about replacing your car commute, here's the real-world comparison from someone who fixes both.

Buyer's Guide5 min read

Common eBike Display Error Codes and What They Actually Mean

Error codes look scary but usually point to one of a few simple problems. Here's the cheat sheet.

Diagnostics6 min read

The Right Tire Pressure for Your eBike (and Why It Matters in San Diego)

Wrong PSI is the #1 cause of pinch flats and sluggish rides. Here's the right number for your bike and where you ride.

Maintenance6 min read

Aventon vs Rad Power Bikes: Which Holds Up Better in North County?

Both are great value, but they break differently. Here's what I see on service calls across Encinitas, Carlsbad, and Oceanside.

Buying Guides7 min read

Riding Near the Coast: Salt, Sand & Water Damage Prevention

Salt air kills eBike electronics faster than anything else. Here's how to keep yours alive for years near the ocean.

Maintenance6 min read

eBike Controller Problems: Diagnosing Power & Throttle Issues

Cutting out under load? Throttle dead but pedal assist works? The controller is usually the culprit. Here's how to diagnose it.

Repair Guides7 min read

Summer eBike Maintenance Checklist for San Diego Riders

Hot pavement, more miles, and beach rides. Run through this checklist before summer riding ramps up.

Maintenance6 min read

Pedal Assist Not Working? 7 Common Causes and Fixes

If your PAS suddenly stopped, it's almost always one of these seven issues. Most are fixable in 10 minutes.

Repair Guides7 min read

Rad Power Bike Battery Replacement Guide (RadCity, RadRover, RadRunner)

Every Rad Power battery eventually loses range. Here's how to diagnose it, what a fresh pack costs, and which replacements actually fit your model.

Repair Guides6 min read

Super 73 Maintenance Schedule: What to Service and When (2026)

Super 73s are built to be ridden hard. Here's the maintenance schedule that keeps yours out of the shop and on the coast.

Maintenance6 min read

Juiced Bikes Common Issues: RipCurrent, Scorpion, and HyperScorpion Fixes

Juiced Bikes are fast, powerful, and repairable - if you know what usually breaks. Here's the shortlist from a working mobile mechanic.

Repair Guides7 min read

Lectric XP Troubleshooting: Fixes for the Most Common Problems

The Lectric XP is one of the best-value eBikes out there - and one of the ones we service most. Here's what usually goes wrong and how to fix it.

Repair Guides6 min read

Murf eBikes Overview: Models, Reliability, and Service Notes

Murf eBikes are becoming a common sight on the Coast Highway. Here's how the moto-style bikes actually hold up - and what to watch for.

Buyer's Guide6 min read

Rad Power vs Lectric: Which Holds Up Better in North County (2026)

Both brands own the North County driveway market. Here's how they actually compare when you've serviced hundreds of them.

Buyer's Guide7 min read

Super 73 vs Murf: Moto-Style eBike Comparison for Coastal San Diego

Two moto-style eBikes, one clear vibe. Here's how Super 73 and Murf actually compare from a mechanic who services both weekly.

Buyer's Guide7 min read

Juiced Bikes Battery Longevity: How to Get 1000+ Charge Cycles

Juiced ships some of the biggest batteries in the eBike world. Here's how to make yours last twice as long as the average pack.

Maintenance6 min read

Super 73 Battery Not Charging: Causes and Fixes

A dead Super 73 battery is rarely a dead battery. Here's the fastest way to figure out what's actually wrong.

Diagnostics5 min read

Super 73 Error Codes Explained (What Each One Means)

Every Super 73 error code points to a specific system. Here's how to read them without calling support.

Diagnostics6 min read

Super 73 Brake Problems and How to Fix Them

Super 73 brakes take a beating from the weight and speed. Here's how to keep them sharp.

Repair Guides6 min read

Super 73 Controller and Display Issues Troubleshooting

Most Super 73 controller and display problems trace back to one of four things. Here is how to narrow it down.

Diagnostics6 min read

How Much Does Super 73 Repair Cost in San Diego

Straight numbers for common Super 73 repairs in North County San Diego, no bait pricing.

Pricing5 min read

Super 73 Flat Tire Fix: Why These Tires Are Different

Super 73 tires are moto-sized, tubed, and heavy. Here is the right way to fix a flat without wrecking the wheel or the motor.

Repair Guides6 min read

Super 73 Won't Turn On: Step by Step Diagnosis

A dead Super 73 is almost never a dead bike. Work these six checks in order.

Diagnostics5 min read

Rad Power Bikes Common Problems (And How to Fix Them)

We are Rad Power specialists in North County San Diego. Here are the issues that come up over and over.

Repair Guides7 min read

Aventon Common Problems (And How to Fix Them)

Aventons ride great when they work. Here are the issues that come up most on Level, Pace, Aventure, and Sinch models.

Repair Guides6 min read

Lectric eBike Common Problems (And How to Fix Them)

Lectric XPs punch way above their price. Here are the things that go wrong and the fixes.

Repair Guides6 min read

Juiced Bikes Common Problems (And How to Fix Them)

Juiced bikes are fast and powerful, and the failures reflect that. Here is what we see most.

Repair Guides6 min read

VanMoof Common Problems (And How to Fix Them)

VanMoof went bankrupt in 2023. Owners are stuck with proprietary parts and no official service. Here is what we can still fix - and what we cannot.

Repair Guides7 min read

Need help in person?

Coastline Fix is North County San Diego's mobile eBike mechanic. We come to you - same-day or next-day.

Book a Mobile Visit · Call (858) 683-6900